Definition of projection in English:

projection

noun prəˈdʒɛkʃ(ə)nprəˈdʒɛkʃ(ə)n

1An estimate or forecast of a future situation based on a study of present trends.
（根据目前形势所作的）估计；预测，推测
plans based on projections of slow but positive growth
以缓慢但积极增长的预测为基础的计划。
mass noun population projection is essential for planning
人口预测对规划很重要。
Example sentencesExamples
- Demographic projections suggest rapid future growth of this ethnic group, due to immigration.
- On the second sowing date, simulated yields using these optimistic projections exceeded the yields using the current weather data.
- While most experts consider the problem severe, others say the gloomy forecasts are based on overly conservative projections of economic growth.
- The trustees present three projections, based on pessimistic, middle-of-the-road and optimistic economic assumptions, respectively.
- Again, budget projections based on historical economic trends would have been even worse than the forecasts that were actually used.
- The government is counting on rising exports to meet its 3.68 percent economic growth projection for this year.
- Original financial projections were based on 444 visitors a day.
- Many companies took the knife to their cost base early in the downturn and many have revisited their cost base as revenue projections became increasingly pessimistic.
- These projections are based on assumptions about fertility and life expectancy as both these measures are independent of the age structure of the population.
- NASA's cost estimates, based on projections that each shuttle would fly at least 100 times, were obviously a key selling point for the shuttle.
- Based on projections of a future increase in tourist arrivals made by the provincial government, the idea to develop an integrated resort was launched.
- The study warns, however, that these positive projections are based upon the retention of a fairly stable oil price.
- Growth projections indicate the center could expand to 200,000 square feet by 2007 and create 30 more jobs.
- When the museum opened in June last year financial projections were based on 200,000 paying customers a year.
- Small declines in the mortality rate today compound and create very large population increases in projections for the future.
- By definition, projections make assumptions based on past behavior, and future behavior may or may not follow the same patterns.
- User fee rates will be based on meeting specific revenue projections.
- The reported strong sales in the opening week have led the paper's promoters to revise original sales projections upwards.
- With the current sales projections, I am sure we both agree there is a need to reduce costs.
- Ditton bases his projections on demographic trends already in play.
Synonyms
estimate, forecast, prediction, calculation, prognosis, prognostication, reckoning, expectation
forecasting, estimation, computation
extrapolation
2mass noun The presentation of an image on a surface, especially a cinema screen.
（尤指在电影屏幕上的）投影
quality illustrations for overhead projection
高射投影的精美画面。
Example sentencesExamples
- I started to use slide projection and projected images more generally.
- I don't think they had any knowledge of image projection from mirrors onto a screen in the 15th century.
- By using slide projection on location, fragments of the past were introduced into the visual field of the present.
- The set featured a large screen television and big screen projection with the questions appearing on the bottom half for all to see.
- Digital projection is the only hope for revival cinema in this country, but revival houses are the last places that can afford new projectors.
- Traditionally used in medical applications, the xenon lamp has evolved into a key component for digital projection for home cinema applications.
- Modern technology has given us exciting new forms of projection and screens that can be seen in well-lighted sanctuaries.
- What actually made you get into cinema projection?
- However, one advantage of digital projection is that cinemas can now be used to show all manner of live programming on the screen as well as movies.
- Since mid 1999, digital projection of major films in newly designated digital cinemas has become a widely discussed option.
- The studio supervisors have incorporated digital images onto film stock for celluloid projection in conventional theatres around the world.
- Here montage and projection take place simultaneously.
1. 2.1count noun An image projected on a surface.
  投影图像
  the band use stage projections featuring moon shots
  乐队用舞台投影表现月光镜头。
  Example sentencesExamples
  It also features video and sound projections as well as live music on stage.
  Since then she has made conceptual photographs, projections, installations, drawings and more.
  Their black and white poster-size prints use video projections as light sources, providing time-elapsed post-exposures of the images.
  The story is told through acting, song, dance and drama, with visual projections, choirs, bands and performance artists all adding to the madness.
  Wood panels create virtual rock walls to simulate the craggy cliffs of the lake, and video projections provide dynamic images of seasonal changes.
  ‘We want a device that you can download films to, press a button and see a huge screen projection,’ said Adrian Cable, director of the company.
  Her intermedia spaces stage the spectacle through multiscreen projections of images of nature.
  I think that was really important to why I started to use projected images and slide projections.
  What distinguishes the troupe's zesty choreography is its travelogue context, with background projections of maps, photos and colourful images of Caracas, the city that gave birth to salsa.
  Another installation is a video projection which shows a rear-view mirror on a car driving on a mountain road.
  Performances will merge live acting with a digital video projection and a soundtrack.
  He has both the voice and look of Meatloaf himself - and is backed by an incredible stage set, video projections and a superb band.
  But the big, blurred picture projections lack the specificity an original photograph and caption give.
  In the course of the performance, projections above the stage suggested a nightscape of starry fields and woods reflected in still water.
  To view the piece one must walk through a narrow door and in between the two rear-screen projections so that the images seem to deflect off of you in both directions.
  Celebration and friendship washed over the brassy clutter of drawings, video projections, raw wood structures, handmade coins and other stuff.
  Here you can see the world's first cinema film projection and first colour photographs.
  Yes, there is a symbiotic relationship between two projections or two images.
  A slide show projection of earlier work is also being presented.
  This area will feature slide projections and visuals by Andrew Clarke.
2. 2.2 The ability to make a sound heard at a distance.
  扩及声音（尤指嗓音）至远处的能力
  I taught him voice projection
  我教他扩音法。
  Example sentencesExamples
  Overhead, a canopy of perforated metal panels extends out toward the first few rows of seats, helping with sound projection.
  His voice and vocal projection are so vivid that whilst he is singing he makes you forget all other performers of the role.
  The melody often is divided between the hands and sometimes involves projection from an interior location.
  What depresses me more is that for our young actors, skills like speaking verse properly and voice projection are no longer a priority.
  Here projection indeed was far less effective than it might have been in this generous acoustic, and one longed to hear the colours and cohesive blends of the chorus more forthrightly.
  On occasion, Janzen's quest for projection moved his voice too far into his chest, pinching the sound; however, he is clearly a talented vocalist.
  Her sensitive and expressive playing lacked colour and projection in the live concert situation.
  It is impressive how a cast made up entirely of New College students achieves such perfect clarity of voice projection.
  Mewes' audio is fine of course, because almost all human beings understand the principles of basic voice projection.
  As well as giving students tips on voice projection, the courses also teach the importance of positive body language and stage presence.
  The cast put in a sound ensemble effort, with excellent voice projection and an obvious understanding of the text.
  The participants will be taught phonetics, diction, voice projection, and drama techniques.
  Modern-day technology with improved sound projection was seriously getting on my nerves.
  Further, the detail and projection of the bass part at the conclusion is quite unique and chilling.
  An artist of this calibre urgently needs a better instrument to allow greater projection of sound into a hall.
  In this unconventional format you don't need much voice projection, with the actors only a short distance from the audience.
  Moscow pianists tended towards a muscular clarity and strong willed emphasis on power and projection.
  There are many sections where voicing and melodic projection will be a concern.
  This model delivers a resonant tone that provides players the ability to create unique, textured, open sounds with good projection.
  These venues were marked by poor projection of both sound and visual.
3mass noun The presentation or promotion of someone or something in a particular way.
（特定方式的）表现，体现
the legal profession's projection of an image of altruism
法律行业表现的自身无私形象。
Example sentencesExamples
- Ideas, any ideas, all ideas, are only a projection of reality, not the other way around.
- What others say and do is a projection of their reality and perception, not yours.
1. 3.1count noun A mental image viewed as reality.
  （被视为现实的）心理意象
  monsters can be understood as mental projections of mankind's fears
  魔鬼可被理解为人类恐惧的心理意象。
  Example sentencesExamples
  This ‘enemy’ is, of course, not really the ‘other,’ but more exactly a projection dependent on our view of ourselves.
  When we begin to have some sense of the relation between subject and object, we may begin to see that it is our own mental projections that are reflected back into our mind.
  Ethical propositions are properly seen as projections of our concerns and attitudes, rather than as references to some property of the world.
  Acknowledging that phenomena are mental projections, we can achieve greater renunciation for there really is no point in getting attached to a situation that is not what it seems to be.
  Psychoanalyst Carl Jung said that flying saucer reports in reality and fiction reflected a psychological projection of nuclear fears.
  Even that image had been a projection of some earthly thing into her make-believe kingdom.
  Of course, the fact that they were there only as projections of her own imagination took a little of the meaning out of that approval.
2. 3.2 The unconscious transfer of one's desires or emotions to another person.
  自身欲望（或情感）的投射转移；无意识的传递
  we protect the self by a number of defence mechanisms, including repression and projection
  我们通过许多防卫机制保护自我，其中包括情感的压制与投射转移。
  Example sentencesExamples
  Among other things, the position of the spectators in the cinema is blatantly one of repression of their exhibitionism and projection of the repressed desire onto the performer.
  When this process, which entails the mechanisms of projection and identification, functions smoothly, depressive feelings can be accepted and worked with.
  This is essentially the biological cycle of ingestion and elimination, becoming the psychological cycle of introjection and projection.
  It was found that both denial and projection of blame were not significantly different among the three groups.
  It is a radical example of what psychologists would call projection.
  It is this kind of unconscious projection that determines our behavior, especially in personal relationships.
  It is not hard to see here the psychological phenomenon of projection: the pot calling the kettle black.
  They operate with so much psychological projection that they would make a great case for a person to use to study for a doctoral thesis!
  A person who during childhood has learnt to reject parts of him/herself is likely to use the psychological defence mechanism of projection in adulthood.
  The principle of projection is well-established in psychology.
  One might think of this as illustrating the defences of splitting, projection and rationalization.
  I don't think I've seen a clearer example of the psychological phenomena known as projection in my life.
  I believe psychologists would call this projection.
  Bonding with a partner is more than just a matter of unconscious projection.
4A thing that extends outwards from something else.
凸出物
the chipboard covered all the sharp projections
刨花板覆盖了所有凸出的尖物。
Example sentencesExamples
- The tumor may have fingerlike projections, which extend into adjacent renal parenchyma.
- Many times, he hit his head on sharp projections of rock from the low, stone ceiling that nearly made him black out again.
- The active contacts may include several sheetlike metallic projections extending inwardly around a hole in the sheetlike element, on a first major surface of the sheetlike element.
- Microblasting technology is used to remove very fine burrs so that there are no sharp projections on the outside edge of the tube tip.
- They differ, however, in having a flat rather than a concave pseudointerarea, and in having a tubular projection extending from larval shell.
- Instead, an enlarged supratemporal intervenes and forms a sharp projection at the corner of the skull table.
- The tongue has many small projections making the surface very markedly ridged.
- The jugular process is enlarged and the tympanic projection is extended anteriorly from the ventral surface of the tympanic bulla.
- Each arm can also include a projection that extends at least partially into a wall opening.
- Their projections possess both a sharp edge and piercing point.
- Tubulovillous polyps are pedunculated, with villous projections extending from the free ends.
- A ventral projection of the jugal extends over the lateral surface of the maxilla.
Synonyms
protuberance, protrusion, sticking-out bit, overhang, ledge, shelf, ridge, prominence, spur, outcrop, outgrowth, jut, bulge, jag, snag
flange, eminence
5Geometry
mass noun The action of projecting a figure.
〔几何〕投射，投影
6mass noun The representation on a plane surface of part of the surface of the earth or a celestial sphere.
（地球或天体在平面上的）投射
Example sentencesExamples
- The Commander hit a switch on his podium and a holographic projection of Earth's moon, Luna, was generated in front of the Commander's podium.
- Different three-dimensional objects, oriented appropriately, have the same two-dimensional plane projection.
- The key formal innovation of Christmas on Earth is its superimposed projection in unequal sizes, a format that she originated.
- Finally, the plane projection of the map doesn't quite work.
1. 6.1count noun A method for representing part of the surface of the earth or a celestial sphere on a plane surface.
  （地球或天体在平面上的）投射
  the use of different map projections
  Example sentencesExamples
  It'd be funny if, after centuries of map projections, the world really did turn out to be flat because of the mountain and valley wrinkles.
  What is surprising is that someone discovered the map projection to do it.
  Cosmographia provided an introduction to astronomy, geography, cartography, surveying, navigation, weather and climate, the shape of the earth, map projections, and mathematical instruments.
  One which has survived is his Cartography which is a work on map projections.
  During this period he began to perfect a new map projection for which he is best remembered.
  Its sophisticated treatment of spherical trigonometry allowed cartographers to construct terrestrial globes and map projections that took into account the curvature of the earth's surface.
  He worked on geodesy but became interested in conformal map projections where he invented a quincuncial map projection using elliptic functions.
  The information was gradually entered into a computer system, which allowed map projections of various kinds of crime to be superimposed on each other.
  He devoted himself to problems of navigation as well as to producing maps and map projections.
  Once this is performed, intelligent resamplers traverse the three-dimensional model to combine the pixels into the desired map projection and scale.

Derivatives

projectionist

noun prəˈdʒɛkʃ(ə)nɪstprəˈdʒɛkʃ(ə)nəst

A person who operates a film projector.
two projectionists will be in the booth at all times
Example sentencesExamples
- At that time, projectionists were usually itinerant foreign merchants who amused themselves by assisting film presentation, while making a little money in the process.
- So they decided, after nearly three years of shooting, to funnel some of the profits into a projection installation team that travelled through the States teaching projectionists how to properly play their 3D film.
- My understanding is that there were a number of unsuccessful attempts in the late sixties and through the seventies to establish movie theater franchises that would use automated systems so they could dispense with projectionists.

Origin

Mid 16th century (in sense 6): from Latin projectio(n-), from proicere 'throw forth' (see project).

Rhymes

abjection, affection, circumspection, collection, complexion, confection, connection, convection, correction, defection, deflection, dejection, detection, direction, ejection, election, genuflection, imperfection, infection, inflection, injection, inspection, insurrection, interconnection, interjection, intersection, introspection, lection, misdirection, objection, perfection, predilection, protection, refection, reflection, rejection, resurrection, retrospection, section, selection, subjection, transection, vivisection

Definition of projection in US English:

projection

nounprəˈdʒɛkʃ(ə)nprəˈjekSH(ə)n

1An estimate or forecast of a future situation or trend based on a study of present ones.
（根据目前形势所作的）估计；预测，推测
plans based on projections of slow but positive growth
以缓慢但积极增长的预测为基础的计划。
population projection is essential for planning
人口预测对规划很重要。
Example sentencesExamples
- Again, budget projections based on historical economic trends would have been even worse than the forecasts that were actually used.
- Demographic projections suggest rapid future growth of this ethnic group, due to immigration.
- The government is counting on rising exports to meet its 3.68 percent economic growth projection for this year.
- Original financial projections were based on 444 visitors a day.
- The study warns, however, that these positive projections are based upon the retention of a fairly stable oil price.
- Many companies took the knife to their cost base early in the downturn and many have revisited their cost base as revenue projections became increasingly pessimistic.
- NASA's cost estimates, based on projections that each shuttle would fly at least 100 times, were obviously a key selling point for the shuttle.
- On the second sowing date, simulated yields using these optimistic projections exceeded the yields using the current weather data.
- The reported strong sales in the opening week have led the paper's promoters to revise original sales projections upwards.
- Ditton bases his projections on demographic trends already in play.
- The trustees present three projections, based on pessimistic, middle-of-the-road and optimistic economic assumptions, respectively.
- With the current sales projections, I am sure we both agree there is a need to reduce costs.
- When the museum opened in June last year financial projections were based on 200,000 paying customers a year.
- User fee rates will be based on meeting specific revenue projections.
- By definition, projections make assumptions based on past behavior, and future behavior may or may not follow the same patterns.
- Growth projections indicate the center could expand to 200,000 square feet by 2007 and create 30 more jobs.
- While most experts consider the problem severe, others say the gloomy forecasts are based on overly conservative projections of economic growth.
- These projections are based on assumptions about fertility and life expectancy as both these measures are independent of the age structure of the population.
- Small declines in the mortality rate today compound and create very large population increases in projections for the future.
- Based on projections of a future increase in tourist arrivals made by the provincial government, the idea to develop an integrated resort was launched.
Synonyms
estimate, forecast, prediction, calculation, prognosis, prognostication, reckoning, expectation
2The presentation of an image on a surface, especially a movie screen.
（尤指在电影屏幕上的）投影
quality illustrations for overhead projection
高射投影的精美画面。
Example sentencesExamples
- Traditionally used in medical applications, the xenon lamp has evolved into a key component for digital projection for home cinema applications.
- Here montage and projection take place simultaneously.
- The studio supervisors have incorporated digital images onto film stock for celluloid projection in conventional theatres around the world.
- However, one advantage of digital projection is that cinemas can now be used to show all manner of live programming on the screen as well as movies.
- I started to use slide projection and projected images more generally.
- I don't think they had any knowledge of image projection from mirrors onto a screen in the 15th century.
- Modern technology has given us exciting new forms of projection and screens that can be seen in well-lighted sanctuaries.
- Digital projection is the only hope for revival cinema in this country, but revival houses are the last places that can afford new projectors.
- What actually made you get into cinema projection?
- Since mid 1999, digital projection of major films in newly designated digital cinemas has become a widely discussed option.
- By using slide projection on location, fragments of the past were introduced into the visual field of the present.
- The set featured a large screen television and big screen projection with the questions appearing on the bottom half for all to see.
1. 2.1 An image projected on a surface.
  投影图像
  the background projections featured humpback whales
  Example sentencesExamples
  Her intermedia spaces stage the spectacle through multiscreen projections of images of nature.
  A slide show projection of earlier work is also being presented.
  The story is told through acting, song, dance and drama, with visual projections, choirs, bands and performance artists all adding to the madness.
  Since then she has made conceptual photographs, projections, installations, drawings and more.
  What distinguishes the troupe's zesty choreography is its travelogue context, with background projections of maps, photos and colourful images of Caracas, the city that gave birth to salsa.
  This area will feature slide projections and visuals by Andrew Clarke.
  Another installation is a video projection which shows a rear-view mirror on a car driving on a mountain road.
  To view the piece one must walk through a narrow door and in between the two rear-screen projections so that the images seem to deflect off of you in both directions.
  Yes, there is a symbiotic relationship between two projections or two images.
  I think that was really important to why I started to use projected images and slide projections.
  Performances will merge live acting with a digital video projection and a soundtrack.
  ‘We want a device that you can download films to, press a button and see a huge screen projection,’ said Adrian Cable, director of the company.
  Here you can see the world's first cinema film projection and first colour photographs.
  Their black and white poster-size prints use video projections as light sources, providing time-elapsed post-exposures of the images.
  In the course of the performance, projections above the stage suggested a nightscape of starry fields and woods reflected in still water.
  But the big, blurred picture projections lack the specificity an original photograph and caption give.
  Celebration and friendship washed over the brassy clutter of drawings, video projections, raw wood structures, handmade coins and other stuff.
  It also features video and sound projections as well as live music on stage.
  Wood panels create virtual rock walls to simulate the craggy cliffs of the lake, and video projections provide dynamic images of seasonal changes.
  He has both the voice and look of Meatloaf himself - and is backed by an incredible stage set, video projections and a superb band.
2. 2.2 The ability to make a sound, especially the voice, heard at a distance.
  扩及声音（尤指嗓音）至远处的能力
  I taught him voice projection
  我教他扩音法。
  Example sentencesExamples
  The cast put in a sound ensemble effort, with excellent voice projection and an obvious understanding of the text.
  An artist of this calibre urgently needs a better instrument to allow greater projection of sound into a hall.
  Overhead, a canopy of perforated metal panels extends out toward the first few rows of seats, helping with sound projection.
  Here projection indeed was far less effective than it might have been in this generous acoustic, and one longed to hear the colours and cohesive blends of the chorus more forthrightly.
  Further, the detail and projection of the bass part at the conclusion is quite unique and chilling.
  This model delivers a resonant tone that provides players the ability to create unique, textured, open sounds with good projection.
  The melody often is divided between the hands and sometimes involves projection from an interior location.
  There are many sections where voicing and melodic projection will be a concern.
  His voice and vocal projection are so vivid that whilst he is singing he makes you forget all other performers of the role.
  On occasion, Janzen's quest for projection moved his voice too far into his chest, pinching the sound; however, he is clearly a talented vocalist.
  Moscow pianists tended towards a muscular clarity and strong willed emphasis on power and projection.
  As well as giving students tips on voice projection, the courses also teach the importance of positive body language and stage presence.
  The participants will be taught phonetics, diction, voice projection, and drama techniques.
  These venues were marked by poor projection of both sound and visual.
  It is impressive how a cast made up entirely of New College students achieves such perfect clarity of voice projection.
  Mewes' audio is fine of course, because almost all human beings understand the principles of basic voice projection.
  Modern-day technology with improved sound projection was seriously getting on my nerves.
  In this unconventional format you don't need much voice projection, with the actors only a short distance from the audience.
  Her sensitive and expressive playing lacked colour and projection in the live concert situation.
  What depresses me more is that for our young actors, skills like speaking verse properly and voice projection are no longer a priority.
3The presentation or promotion of someone or something in a particular way.
（特定方式的）表现，体现
the legal profession's projection of an image of altruism
法律行业表现的自身无私形象。
Example sentencesExamples
- What others say and do is a projection of their reality and perception, not yours.
- Ideas, any ideas, all ideas, are only a projection of reality, not the other way around.
1. 3.1 A mental image viewed as reality.
  （被视为现实的）心理意象
  monsters can be understood as mental projections of mankind's fears
  魔鬼可被理解为人类恐惧的心理意象。
  Example sentencesExamples
  Acknowledging that phenomena are mental projections, we can achieve greater renunciation for there really is no point in getting attached to a situation that is not what it seems to be.
  This ‘enemy’ is, of course, not really the ‘other,’ but more exactly a projection dependent on our view of ourselves.
  Ethical propositions are properly seen as projections of our concerns and attitudes, rather than as references to some property of the world.
  Of course, the fact that they were there only as projections of her own imagination took a little of the meaning out of that approval.
  Psychoanalyst Carl Jung said that flying saucer reports in reality and fiction reflected a psychological projection of nuclear fears.
  Even that image had been a projection of some earthly thing into her make-believe kingdom.
  When we begin to have some sense of the relation between subject and object, we may begin to see that it is our own mental projections that are reflected back into our mind.
2. 3.2 The unconscious transfer of one's own desires or emotions to another person.
  自身欲望（或情感）的投射转移；无意识的传递
  we protect the self by a number of defense mechanisms, including repression and projection
  我们通过许多防卫机制保护自我，其中包括情感的压制与投射转移。
  Example sentencesExamples
  It is this kind of unconscious projection that determines our behavior, especially in personal relationships.
  It is not hard to see here the psychological phenomenon of projection: the pot calling the kettle black.
  It is a radical example of what psychologists would call projection.
  Among other things, the position of the spectators in the cinema is blatantly one of repression of their exhibitionism and projection of the repressed desire onto the performer.
  Bonding with a partner is more than just a matter of unconscious projection.
  A person who during childhood has learnt to reject parts of him/herself is likely to use the psychological defence mechanism of projection in adulthood.
  They operate with so much psychological projection that they would make a great case for a person to use to study for a doctoral thesis!
  The principle of projection is well-established in psychology.
  It was found that both denial and projection of blame were not significantly different among the three groups.
  One might think of this as illustrating the defences of splitting, projection and rationalization.
  I believe psychologists would call this projection.
  This is essentially the biological cycle of ingestion and elimination, becoming the psychological cycle of introjection and projection.
  I don't think I've seen a clearer example of the psychological phenomena known as projection in my life.
  When this process, which entails the mechanisms of projection and identification, functions smoothly, depressive feelings can be accepted and worked with.
4A thing that extends outward from something else.
凸出物
the particle board covered all the sharp projections
刨花板覆盖了所有凸出的尖物。
Example sentencesExamples
- Tubulovillous polyps are pedunculated, with villous projections extending from the free ends.
- Microblasting technology is used to remove very fine burrs so that there are no sharp projections on the outside edge of the tube tip.
- A ventral projection of the jugal extends over the lateral surface of the maxilla.
- Each arm can also include a projection that extends at least partially into a wall opening.
- Their projections possess both a sharp edge and piercing point.
- The tumor may have fingerlike projections, which extend into adjacent renal parenchyma.
- The active contacts may include several sheetlike metallic projections extending inwardly around a hole in the sheetlike element, on a first major surface of the sheetlike element.
- The tongue has many small projections making the surface very markedly ridged.
- The jugular process is enlarged and the tympanic projection is extended anteriorly from the ventral surface of the tympanic bulla.
- They differ, however, in having a flat rather than a concave pseudointerarea, and in having a tubular projection extending from larval shell.
- Many times, he hit his head on sharp projections of rock from the low, stone ceiling that nearly made him black out again.
- Instead, an enlarged supratemporal intervenes and forms a sharp projection at the corner of the skull table.
Synonyms
protuberance, protrusion, sticking-out bit, overhang, ledge, shelf, ridge, prominence, spur, outcrop, outgrowth, jut, bulge, jag, snag
5Geometry
The action of projecting a figure.
〔几何〕投射，投影
6The representation on a plane surface of any part of the surface of the earth or a celestial sphere.
（地球或天体在平面上的）投射
Example sentencesExamples
- The key formal innovation of Christmas on Earth is its superimposed projection in unequal sizes, a format that she originated.
- Different three-dimensional objects, oriented appropriately, have the same two-dimensional plane projection.
- The Commander hit a switch on his podium and a holographic projection of Earth's moon, Luna, was generated in front of the Commander's podium.
- Finally, the plane projection of the map doesn't quite work.
1. 6.1 A method for representing part of the surface of the earth or a celestial sphere on a plane surface.
  （地球或天体在平面上的）投射
  Example sentencesExamples
  Its sophisticated treatment of spherical trigonometry allowed cartographers to construct terrestrial globes and map projections that took into account the curvature of the earth's surface.
  He worked on geodesy but became interested in conformal map projections where he invented a quincuncial map projection using elliptic functions.
  It'd be funny if, after centuries of map projections, the world really did turn out to be flat because of the mountain and valley wrinkles.
  He devoted himself to problems of navigation as well as to producing maps and map projections.
  During this period he began to perfect a new map projection for which he is best remembered.
  What is surprising is that someone discovered the map projection to do it.
  One which has survived is his Cartography which is a work on map projections.
  Cosmographia provided an introduction to astronomy, geography, cartography, surveying, navigation, weather and climate, the shape of the earth, map projections, and mathematical instruments.
  Once this is performed, intelligent resamplers traverse the three-dimensional model to combine the pixels into the desired map projection and scale.
  The information was gradually entered into a computer system, which allowed map projections of various kinds of crime to be superimposed on each other.

Origin

Mid 16th century (in projection (sense 6)): from Latin projectio(n-), from proicere ‘throw forth’ (see project).

单词	projection
释义	Definition of projection in English: projection noun prəˈdʒɛkʃ(ə)nprəˈdʒɛkʃ(ə)n 1An estimate or forecast of a future situation based on a study of present trends. （根据目前形势所作的）估计；预测，推测 plans based on projections of slow but positive growth 以缓慢但积极增长的预测为基础的计划。 mass noun population projection is essential for planning 人口预测对规划很重要。 Example sentencesExamples Demographic projections suggest rapid future growth of this ethnic group, due to immigration. On the second sowing date, simulated yields using these optimistic projections exceeded the yields using the current weather data. While most experts consider the problem severe, others say the gloomy forecasts are based on overly conservative projections of economic growth. The trustees present three projections, based on pessimistic, middle-of-the-road and optimistic economic assumptions, respectively. Again, budget projections based on historical economic trends would have been even worse than the forecasts that were actually used. The government is counting on rising exports to meet its 3.68 percent economic growth projection for this year. Original financial projections were based on 444 visitors a day. Many companies took the knife to their cost base early in the downturn and many have revisited their cost base as revenue projections became increasingly pessimistic. These projections are based on assumptions about fertility and life expectancy as both these measures are independent of the age structure of the population. NASA's cost estimates, based on projections that each shuttle would fly at least 100 times, were obviously a key selling point for the shuttle. Based on projections of a future increase in tourist arrivals made by the provincial government, the idea to develop an integrated resort was launched. The study warns, however, that these positive projections are based upon the retention of a fairly stable oil price. Growth projections indicate the center could expand to 200,000 square feet by 2007 and create 30 more jobs. When the museum opened in June last year financial projections were based on 200,000 paying customers a year. Small declines in the mortality rate today compound and create very large population increases in projections for the future. By definition, projections make assumptions based on past behavior, and future behavior may or may not follow the same patterns. User fee rates will be based on meeting specific revenue projections. The reported strong sales in the opening week have led the paper's promoters to revise original sales projections upwards. With the current sales projections, I am sure we both agree there is a need to reduce costs. Ditton bases his projections on demographic trends already in play. Synonyms estimate, forecast, prediction, calculation, prognosis, prognostication, reckoning, expectation forecasting, estimation, computation extrapolation 2mass noun The presentation of an image on a surface, especially a cinema screen. （尤指在电影屏幕上的）投影 quality illustrations for overhead projection 高射投影的精美画面。 Example sentencesExamples I started to use slide projection and projected images more generally. I don't think they had any knowledge of image projection from mirrors onto a screen in the 15th century. By using slide projection on location, fragments of the past were introduced into the visual field of the present. The set featured a large screen television and big screen projection with the questions appearing on the bottom half for all to see. Digital projection is the only hope for revival cinema in this country, but revival houses are the last places that can afford new projectors. Traditionally used in medical applications, the xenon lamp has evolved into a key component for digital projection for home cinema applications. Modern technology has given us exciting new forms of projection and screens that can be seen in well-lighted sanctuaries. What actually made you get into cinema projection? However, one advantage of digital projection is that cinemas can now be used to show all manner of live programming on the screen as well as movies. Since mid 1999, digital projection of major films in newly designated digital cinemas has become a widely discussed option. The studio supervisors have incorporated digital images onto film stock for celluloid projection in conventional theatres around the world. Here montage and projection take place simultaneously. 2.1count noun An image projected on a surface. 投影图像 the band use stage projections featuring moon shots 乐队用舞台投影表现月光镜头。 Example sentencesExamples It also features video and sound projections as well as live music on stage. Since then she has made conceptual photographs, projections, installations, drawings and more. Their black and white poster-size prints use video projections as light sources, providing time-elapsed post-exposures of the images. The story is told through acting, song, dance and drama, with visual projections, choirs, bands and performance artists all adding to the madness. Wood panels create virtual rock walls to simulate the craggy cliffs of the lake, and video projections provide dynamic images of seasonal changes. ‘We want a device that you can download films to, press a button and see a huge screen projection,’ said Adrian Cable, director of the company. Her intermedia spaces stage the spectacle through multiscreen projections of images of nature. I think that was really important to why I started to use projected images and slide projections. What distinguishes the troupe's zesty choreography is its travelogue context, with background projections of maps, photos and colourful images of Caracas, the city that gave birth to salsa. Another installation is a video projection which shows a rear-view mirror on a car driving on a mountain road. Performances will merge live acting with a digital video projection and a soundtrack. He has both the voice and look of Meatloaf himself - and is backed by an incredible stage set, video projections and a superb band. But the big, blurred picture projections lack the specificity an original photograph and caption give. In the course of the performance, projections above the stage suggested a nightscape of starry fields and woods reflected in still water. To view the piece one must walk through a narrow door and in between the two rear-screen projections so that the images seem to deflect off of you in both directions. Celebration and friendship washed over the brassy clutter of drawings, video projections, raw wood structures, handmade coins and other stuff. Here you can see the world's first cinema film projection and first colour photographs. Yes, there is a symbiotic relationship between two projections or two images. A slide show projection of earlier work is also being presented. This area will feature slide projections and visuals by Andrew Clarke. 2.2 The ability to make a sound heard at a distance. 扩及声音（尤指嗓音）至远处的能力 I taught him voice projection 我教他扩音法。 Example sentencesExamples Overhead, a canopy of perforated metal panels extends out toward the first few rows of seats, helping with sound projection. His voice and vocal projection are so vivid that whilst he is singing he makes you forget all other performers of the role. The melody often is divided between the hands and sometimes involves projection from an interior location. What depresses me more is that for our young actors, skills like speaking verse properly and voice projection are no longer a priority. Here projection indeed was far less effective than it might have been in this generous acoustic, and one longed to hear the colours and cohesive blends of the chorus more forthrightly. On occasion, Janzen's quest for projection moved his voice too far into his chest, pinching the sound; however, he is clearly a talented vocalist. Her sensitive and expressive playing lacked colour and projection in the live concert situation. It is impressive how a cast made up entirely of New College students achieves such perfect clarity of voice projection. Mewes' audio is fine of course, because almost all human beings understand the principles of basic voice projection. As well as giving students tips on voice projection, the courses also teach the importance of positive body language and stage presence. The cast put in a sound ensemble effort, with excellent voice projection and an obvious understanding of the text. The participants will be taught phonetics, diction, voice projection, and drama techniques. Modern-day technology with improved sound projection was seriously getting on my nerves. Further, the detail and projection of the bass part at the conclusion is quite unique and chilling. An artist of this calibre urgently needs a better instrument to allow greater projection of sound into a hall. In this unconventional format you don't need much voice projection, with the actors only a short distance from the audience. Moscow pianists tended towards a muscular clarity and strong willed emphasis on power and projection. There are many sections where voicing and melodic projection will be a concern. This model delivers a resonant tone that provides players the ability to create unique, textured, open sounds with good projection. These venues were marked by poor projection of both sound and visual. 3mass noun The presentation or promotion of someone or something in a particular way. （特定方式的）表现，体现 the legal profession's projection of an image of altruism 法律行业表现的自身无私形象。 Example sentencesExamples Ideas, any ideas, all ideas, are only a projection of reality, not the other way around. What others say and do is a projection of their reality and perception, not yours. 3.1count noun A mental image viewed as reality. （被视为现实的）心理意象 monsters can be understood as mental projections of mankind's fears 魔鬼可被理解为人类恐惧的心理意象。 Example sentencesExamples This ‘enemy’ is, of course, not really the ‘other,’ but more exactly a projection dependent on our view of ourselves. When we begin to have some sense of the relation between subject and object, we may begin to see that it is our own mental projections that are reflected back into our mind. Ethical propositions are properly seen as projections of our concerns and attitudes, rather than as references to some property of the world. Acknowledging that phenomena are mental projections, we can achieve greater renunciation for there really is no point in getting attached to a situation that is not what it seems to be. Psychoanalyst Carl Jung said that flying saucer reports in reality and fiction reflected a psychological projection of nuclear fears. Even that image had been a projection of some earthly thing into her make-believe kingdom. Of course, the fact that they were there only as projections of her own imagination took a little of the meaning out of that approval. 3.2 The unconscious transfer of one's desires or emotions to another person. 自身欲望（或情感）的投射转移；无意识的传递 we protect the self by a number of defence mechanisms, including repression and projection 我们通过许多防卫机制保护自我，其中包括情感的压制与投射转移。 Example sentencesExamples Among other things, the position of the spectators in the cinema is blatantly one of repression of their exhibitionism and projection of the repressed desire onto the performer. When this process, which entails the mechanisms of projection and identification, functions smoothly, depressive feelings can be accepted and worked with. This is essentially the biological cycle of ingestion and elimination, becoming the psychological cycle of introjection and projection. It was found that both denial and projection of blame were not significantly different among the three groups. It is a radical example of what psychologists would call projection. It is this kind of unconscious projection that determines our behavior, especially in personal relationships. It is not hard to see here the psychological phenomenon of projection: the pot calling the kettle black. They operate with so much psychological projection that they would make a great case for a person to use to study for a doctoral thesis! A person who during childhood has learnt to reject parts of him/herself is likely to use the psychological defence mechanism of projection in adulthood. The principle of projection is well-established in psychology. One might think of this as illustrating the defences of splitting, projection and rationalization. I don't think I've seen a clearer example of the psychological phenomena known as projection in my life. I believe psychologists would call this projection. Bonding with a partner is more than just a matter of unconscious projection. 4A thing that extends outwards from something else. 凸出物 the chipboard covered all the sharp projections 刨花板覆盖了所有凸出的尖物。 Example sentencesExamples The tumor may have fingerlike projections, which extend into adjacent renal parenchyma. Many times, he hit his head on sharp projections of rock from the low, stone ceiling that nearly made him black out again. The active contacts may include several sheetlike metallic projections extending inwardly around a hole in the sheetlike element, on a first major surface of the sheetlike element. Microblasting technology is used to remove very fine burrs so that there are no sharp projections on the outside edge of the tube tip. They differ, however, in having a flat rather than a concave pseudointerarea, and in having a tubular projection extending from larval shell. Instead, an enlarged supratemporal intervenes and forms a sharp projection at the corner of the skull table. The tongue has many small projections making the surface very markedly ridged. The jugular process is enlarged and the tympanic projection is extended anteriorly from the ventral surface of the tympanic bulla. Each arm can also include a projection that extends at least partially into a wall opening. Their projections possess both a sharp edge and piercing point. Tubulovillous polyps are pedunculated, with villous projections extending from the free ends. A ventral projection of the jugal extends over the lateral surface of the maxilla. Synonyms protuberance, protrusion, sticking-out bit, overhang, ledge, shelf, ridge, prominence, spur, outcrop, outgrowth, jut, bulge, jag, snag flange, eminence 5Geometry mass noun The action of projecting a figure. 〔几何〕投射，投影 6mass noun The representation on a plane surface of part of the surface of the earth or a celestial sphere. （地球或天体在平面上的）投射 Example sentencesExamples The Commander hit a switch on his podium and a holographic projection of Earth's moon, Luna, was generated in front of the Commander's podium. Different three-dimensional objects, oriented appropriately, have the same two-dimensional plane projection. The key formal innovation of Christmas on Earth is its superimposed projection in unequal sizes, a format that she originated. Finally, the plane projection of the map doesn't quite work. 6.1count noun A method for representing part of the surface of the earth or a celestial sphere on a plane surface. （地球或天体在平面上的）投射 the use of different map projections Example sentencesExamples It'd be funny if, after centuries of map projections, the world really did turn out to be flat because of the mountain and valley wrinkles. What is surprising is that someone discovered the map projection to do it. Cosmographia provided an introduction to astronomy, geography, cartography, surveying, navigation, weather and climate, the shape of the earth, map projections, and mathematical instruments. One which has survived is his Cartography which is a work on map projections. During this period he began to perfect a new map projection for which he is best remembered. Its sophisticated treatment of spherical trigonometry allowed cartographers to construct terrestrial globes and map projections that took into account the curvature of the earth's surface. He worked on geodesy but became interested in conformal map projections where he invented a quincuncial map projection using elliptic functions. The information was gradually entered into a computer system, which allowed map projections of various kinds of crime to be superimposed on each other. He devoted himself to problems of navigation as well as to producing maps and map projections. Once this is performed, intelligent resamplers traverse the three-dimensional model to combine the pixels into the desired map projection and scale. Derivatives projectionist noun prəˈdʒɛkʃ(ə)nɪstprəˈdʒɛkʃ(ə)nəst A person who operates a film projector. two projectionists will be in the booth at all times Example sentencesExamples At that time, projectionists were usually itinerant foreign merchants who amused themselves by assisting film presentation, while making a little money in the process. So they decided, after nearly three years of shooting, to funnel some of the profits into a projection installation team that travelled through the States teaching projectionists how to properly play their 3D film. My understanding is that there were a number of unsuccessful attempts in the late sixties and through the seventies to establish movie theater franchises that would use automated systems so they could dispense with projectionists. Origin Mid 16th century (in sense 6): from Latin projectio(n-), from proicere 'throw forth' (see project). Rhymes abjection, affection, circumspection, collection, complexion, confection, connection, convection, correction, defection, deflection, dejection, detection, direction, ejection, election, genuflection, imperfection, infection, inflection, injection, inspection, insurrection, interconnection, interjection, intersection, introspection, lection, misdirection, objection, perfection, predilection, protection, refection, reflection, rejection, resurrection, retrospection, section, selection, subjection, transection, vivisection Definition of projection in US English: projection nounprəˈdʒɛkʃ(ə)nprəˈjekSH(ə)n 1An estimate or forecast of a future situation or trend based on a study of present ones. （根据目前形势所作的）估计；预测，推测 plans based on projections of slow but positive growth 以缓慢但积极增长的预测为基础的计划。 population projection is essential for planning 人口预测对规划很重要。 Example sentencesExamples Again, budget projections based on historical economic trends would have been even worse than the forecasts that were actually used. Demographic projections suggest rapid future growth of this ethnic group, due to immigration. The government is counting on rising exports to meet its 3.68 percent economic growth projection for this year. Original financial projections were based on 444 visitors a day. The study warns, however, that these positive projections are based upon the retention of a fairly stable oil price. Many companies took the knife to their cost base early in the downturn and many have revisited their cost base as revenue projections became increasingly pessimistic. NASA's cost estimates, based on projections that each shuttle would fly at least 100 times, were obviously a key selling point for the shuttle. On the second sowing date, simulated yields using these optimistic projections exceeded the yields using the current weather data. The reported strong sales in the opening week have led the paper's promoters to revise original sales projections upwards. Ditton bases his projections on demographic trends already in play. The trustees present three projections, based on pessimistic, middle-of-the-road and optimistic economic assumptions, respectively. With the current sales projections, I am sure we both agree there is a need to reduce costs. When the museum opened in June last year financial projections were based on 200,000 paying customers a year. User fee rates will be based on meeting specific revenue projections. By definition, projections make assumptions based on past behavior, and future behavior may or may not follow the same patterns. Growth projections indicate the center could expand to 200,000 square feet by 2007 and create 30 more jobs. While most experts consider the problem severe, others say the gloomy forecasts are based on overly conservative projections of economic growth. These projections are based on assumptions about fertility and life expectancy as both these measures are independent of the age structure of the population. Small declines in the mortality rate today compound and create very large population increases in projections for the future. Based on projections of a future increase in tourist arrivals made by the provincial government, the idea to develop an integrated resort was launched. Synonyms estimate, forecast, prediction, calculation, prognosis, prognostication, reckoning, expectation 2The presentation of an image on a surface, especially a movie screen. （尤指在电影屏幕上的）投影 quality illustrations for overhead projection 高射投影的精美画面。 Example sentencesExamples Traditionally used in medical applications, the xenon lamp has evolved into a key component for digital projection for home cinema applications. Here montage and projection take place simultaneously. The studio supervisors have incorporated digital images onto film stock for celluloid projection in conventional theatres around the world. However, one advantage of digital projection is that cinemas can now be used to show all manner of live programming on the screen as well as movies. I started to use slide projection and projected images more generally. I don't think they had any knowledge of image projection from mirrors onto a screen in the 15th century. Modern technology has given us exciting new forms of projection and screens that can be seen in well-lighted sanctuaries. Digital projection is the only hope for revival cinema in this country, but revival houses are the last places that can afford new projectors. What actually made you get into cinema projection? Since mid 1999, digital projection of major films in newly designated digital cinemas has become a widely discussed option. By using slide projection on location, fragments of the past were introduced into the visual field of the present. The set featured a large screen television and big screen projection with the questions appearing on the bottom half for all to see. 2.1 An image projected on a surface. 投影图像 the background projections featured humpback whales Example sentencesExamples Her intermedia spaces stage the spectacle through multiscreen projections of images of nature. A slide show projection of earlier work is also being presented. The story is told through acting, song, dance and drama, with visual projections, choirs, bands and performance artists all adding to the madness. Since then she has made conceptual photographs, projections, installations, drawings and more. What distinguishes the troupe's zesty choreography is its travelogue context, with background projections of maps, photos and colourful images of Caracas, the city that gave birth to salsa. This area will feature slide projections and visuals by Andrew Clarke. Another installation is a video projection which shows a rear-view mirror on a car driving on a mountain road. To view the piece one must walk through a narrow door and in between the two rear-screen projections so that the images seem to deflect off of you in both directions. Yes, there is a symbiotic relationship between two projections or two images. I think that was really important to why I started to use projected images and slide projections. Performances will merge live acting with a digital video projection and a soundtrack. ‘We want a device that you can download films to, press a button and see a huge screen projection,’ said Adrian Cable, director of the company. Here you can see the world's first cinema film projection and first colour photographs. Their black and white poster-size prints use video projections as light sources, providing time-elapsed post-exposures of the images. In the course of the performance, projections above the stage suggested a nightscape of starry fields and woods reflected in still water. But the big, blurred picture projections lack the specificity an original photograph and caption give. Celebration and friendship washed over the brassy clutter of drawings, video projections, raw wood structures, handmade coins and other stuff. It also features video and sound projections as well as live music on stage. Wood panels create virtual rock walls to simulate the craggy cliffs of the lake, and video projections provide dynamic images of seasonal changes. He has both the voice and look of Meatloaf himself - and is backed by an incredible stage set, video projections and a superb band. 2.2 The ability to make a sound, especially the voice, heard at a distance. 扩及声音（尤指嗓音）至远处的能力 I taught him voice projection 我教他扩音法。 Example sentencesExamples The cast put in a sound ensemble effort, with excellent voice projection and an obvious understanding of the text. An artist of this calibre urgently needs a better instrument to allow greater projection of sound into a hall. Overhead, a canopy of perforated metal panels extends out toward the first few rows of seats, helping with sound projection. Here projection indeed was far less effective than it might have been in this generous acoustic, and one longed to hear the colours and cohesive blends of the chorus more forthrightly. Further, the detail and projection of the bass part at the conclusion is quite unique and chilling. This model delivers a resonant tone that provides players the ability to create unique, textured, open sounds with good projection. The melody often is divided between the hands and sometimes involves projection from an interior location. There are many sections where voicing and melodic projection will be a concern. His voice and vocal projection are so vivid that whilst he is singing he makes you forget all other performers of the role. On occasion, Janzen's quest for projection moved his voice too far into his chest, pinching the sound; however, he is clearly a talented vocalist. Moscow pianists tended towards a muscular clarity and strong willed emphasis on power and projection. As well as giving students tips on voice projection, the courses also teach the importance of positive body language and stage presence. The participants will be taught phonetics, diction, voice projection, and drama techniques. These venues were marked by poor projection of both sound and visual. It is impressive how a cast made up entirely of New College students achieves such perfect clarity of voice projection. Mewes' audio is fine of course, because almost all human beings understand the principles of basic voice projection. Modern-day technology with improved sound projection was seriously getting on my nerves. In this unconventional format you don't need much voice projection, with the actors only a short distance from the audience. Her sensitive and expressive playing lacked colour and projection in the live concert situation. What depresses me more is that for our young actors, skills like speaking verse properly and voice projection are no longer a priority. 3The presentation or promotion of someone or something in a particular way. （特定方式的）表现，体现 the legal profession's projection of an image of altruism 法律行业表现的自身无私形象。 Example sentencesExamples What others say and do is a projection of their reality and perception, not yours. Ideas, any ideas, all ideas, are only a projection of reality, not the other way around. 3.1 A mental image viewed as reality. （被视为现实的）心理意象 monsters can be understood as mental projections of mankind's fears 魔鬼可被理解为人类恐惧的心理意象。 Example sentencesExamples Acknowledging that phenomena are mental projections, we can achieve greater renunciation for there really is no point in getting attached to a situation that is not what it seems to be. This ‘enemy’ is, of course, not really the ‘other,’ but more exactly a projection dependent on our view of ourselves. Ethical propositions are properly seen as projections of our concerns and attitudes, rather than as references to some property of the world. Of course, the fact that they were there only as projections of her own imagination took a little of the meaning out of that approval. Psychoanalyst Carl Jung said that flying saucer reports in reality and fiction reflected a psychological projection of nuclear fears. Even that image had been a projection of some earthly thing into her make-believe kingdom. When we begin to have some sense of the relation between subject and object, we may begin to see that it is our own mental projections that are reflected back into our mind. 3.2 The unconscious transfer of one's own desires or emotions to another person. 自身欲望（或情感）的投射转移；无意识的传递 we protect the self by a number of defense mechanisms, including repression and projection 我们通过许多防卫机制保护自我，其中包括情感的压制与投射转移。 Example sentencesExamples It is this kind of unconscious projection that determines our behavior, especially in personal relationships. It is not hard to see here the psychological phenomenon of projection: the pot calling the kettle black. It is a radical example of what psychologists would call projection. Among other things, the position of the spectators in the cinema is blatantly one of repression of their exhibitionism and projection of the repressed desire onto the performer. Bonding with a partner is more than just a matter of unconscious projection. A person who during childhood has learnt to reject parts of him/herself is likely to use the psychological defence mechanism of projection in adulthood. They operate with so much psychological projection that they would make a great case for a person to use to study for a doctoral thesis! The principle of projection is well-established in psychology. It was found that both denial and projection of blame were not significantly different among the three groups. One might think of this as illustrating the defences of splitting, projection and rationalization. I believe psychologists would call this projection. This is essentially the biological cycle of ingestion and elimination, becoming the psychological cycle of introjection and projection. I don't think I've seen a clearer example of the psychological phenomena known as projection in my life. When this process, which entails the mechanisms of projection and identification, functions smoothly, depressive feelings can be accepted and worked with. 4A thing that extends outward from something else. 凸出物 the particle board covered all the sharp projections 刨花板覆盖了所有凸出的尖物。 Example sentencesExamples Tubulovillous polyps are pedunculated, with villous projections extending from the free ends. Microblasting technology is used to remove very fine burrs so that there are no sharp projections on the outside edge of the tube tip. A ventral projection of the jugal extends over the lateral surface of the maxilla. Each arm can also include a projection that extends at least partially into a wall opening. Their projections possess both a sharp edge and piercing point. The tumor may have fingerlike projections, which extend into adjacent renal parenchyma. The active contacts may include several sheetlike metallic projections extending inwardly around a hole in the sheetlike element, on a first major surface of the sheetlike element. The tongue has many small projections making the surface very markedly ridged. The jugular process is enlarged and the tympanic projection is extended anteriorly from the ventral surface of the tympanic bulla. They differ, however, in having a flat rather than a concave pseudointerarea, and in having a tubular projection extending from larval shell. Many times, he hit his head on sharp projections of rock from the low, stone ceiling that nearly made him black out again. Instead, an enlarged supratemporal intervenes and forms a sharp projection at the corner of the skull table. Synonyms protuberance, protrusion, sticking-out bit, overhang, ledge, shelf, ridge, prominence, spur, outcrop, outgrowth, jut, bulge, jag, snag 5Geometry The action of projecting a figure. 〔几何〕投射，投影 6The representation on a plane surface of any part of the surface of the earth or a celestial sphere. （地球或天体在平面上的）投射 Example sentencesExamples The key formal innovation of Christmas on Earth is its superimposed projection in unequal sizes, a format that she originated. Different three-dimensional objects, oriented appropriately, have the same two-dimensional plane projection. The Commander hit a switch on his podium and a holographic projection of Earth's moon, Luna, was generated in front of the Commander's podium. Finally, the plane projection of the map doesn't quite work. 6.1 A method for representing part of the surface of the earth or a celestial sphere on a plane surface. （地球或天体在平面上的）投射 Example sentencesExamples Its sophisticated treatment of spherical trigonometry allowed cartographers to construct terrestrial globes and map projections that took into account the curvature of the earth's surface. He worked on geodesy but became interested in conformal map projections where he invented a quincuncial map projection using elliptic functions. It'd be funny if, after centuries of map projections, the world really did turn out to be flat because of the mountain and valley wrinkles. He devoted himself to problems of navigation as well as to producing maps and map projections. During this period he began to perfect a new map projection for which he is best remembered. What is surprising is that someone discovered the map projection to do it. One which has survived is his Cartography which is a work on map projections. Cosmographia provided an introduction to astronomy, geography, cartography, surveying, navigation, weather and climate, the shape of the earth, map projections, and mathematical instruments. Once this is performed, intelligent resamplers traverse the three-dimensional model to combine the pixels into the desired map projection and scale. The information was gradually entered into a computer system, which allowed map projections of various kinds of crime to be superimposed on each other. Origin Mid 16th century (in projection (sense 6)): from Latin projectio(n-), from proicere ‘throw forth’ (see project).
随便看	amobic amoboid A-mode a modicum a modicum of amoeba amoebae amoebas amoebiasis amoebic amoebic amoebic dysentery amoeboid amoeboid amok amok(e amole a moloch a moloch a moment a moment ago amon Amon among among american indians happy hunting ground