请输入您要查询的英文单词:

 

单词 sonar
释义

Definition of sonar in English:

sonar

noun ˈsəʊnɑːˈsoʊˌnɑr
mass noun
  • 1A system for the detection of objects under water by emitting sound pulses and detecting or measuring their return after being reflected.

    声呐

    as modifier a weak sonar signal
    Example sentencesExamples
    • And evidence that sonar kills whales goes way beyond coincidence.
    • Out in the Atlantic, vast Japanese factory ships work nonstop, using modern sonar detection to spot the tuna shoals they sweep the ocean clean of fish.
    • Now, video footage and sonar data proves conclusively that the wreck is not Centaur.
    • For instance, he said, its active and passive sonar systems are aging, thus shortening the range of its monitoring.
    • The SUNS system can determine positions underwater by the use of small buoys which broadcast the position and time references by sonar signals.
    1. 1.1count noun An apparatus used in sonar.
      声波定位仪
      we reduced the sensitivity of our scanning sonars
      Example sentencesExamples
      • It just seemed to me that it would be more interesting to have things like submarine sonars and old grandfather clocks and lines from famous movies and bird songs and things like that.
      • Acms receives data from the sonars and other sensors and, through advanced algorithms and data handling, displays real time images on the command consoles.
      • They will be equipped with the latest survey systems, including multi-beam echo sounders and modern side-scan sonars, as well as the most advanced navigation and communications systems.
      • It is equipped with a ham radio set, personal computer, global positioning system, two sonars, autopilot and wind wane which steers the boat depending on the direction of the wind.
      • Autosub will be using sonars to study the seabed.
    2. 1.2 The method of echolocation used in air or water by animals such as whales and bats.
      声呐定位法
      the fishing nets are detectable by dolphin sonar
      Example sentencesExamples
      • The knowledge the researchers gain about bat sonar is tested out on dolphins and applied to human sonar systems.
      • Hearing the unusual ping, the animals might turn on their echolocators - their sonar - and then they can sense the net.
      • While the animals lack sonar, they do posses superb directional underwater hearing and the ability to see in near-darkness.
      • They believe that by being in the water with the animals and feeling their sonar they too are receiving a ‘healing’.
      • The animal's sensitive sonar is capable of picking up information about the shape of distant objects, and it was trained to respond in some distinctive way to this piece of information.

Origin

1940s: from so(und) na(vigation and) r(anging), on the pattern of radar.

  • sound from Old English:

    There are four different ‘sounds’ in English. The one relating to noise is from Latin sonus. Related words are dissonance (Late Middle English) ‘inharmonious’; resonance (Late Middle English) ‘echo, resound’; resonant (late 16th century); resound (Late Middle English); and sonorous (early 17th century). Sonar, however, is an acronym formed from Sound Navigation and Ranging on the pattern of radar. Sound, meaning ‘in good condition, not damaged or diseased’, is from Old English gesund. In Middle English the prominent sense was ‘uninjured, unwounded’. Use of sound to mean ‘having well-grounded opinions’ dates from the early 16th century; the phrase as sound as a bell appeared in the late 16th century. This puns on the first meaning of sound, and also on the fact that a cracked bell will not ring true. The third sound (Late Middle English) ‘ascertain the depth of water’ is from Old French sonder, based on Latin sub- ‘below’ and unda ‘wave’. The final one for a narrow stretch of water is Middle English from Old Norse sund ‘swimming, strait’, related to swim.

Definition of sonar in US English:

sonar

nounˈsōˌnärˈsoʊˌnɑr
  • 1A system for the detection of objects under water and for measuring the water's depth by emitting sound pulses and detecting or measuring their return after being reflected.

    声呐

    as modifier a weak sonar signal
    Example sentencesExamples
    • Out in the Atlantic, vast Japanese factory ships work nonstop, using modern sonar detection to spot the tuna shoals they sweep the ocean clean of fish.
    • Now, video footage and sonar data proves conclusively that the wreck is not Centaur.
    • The SUNS system can determine positions underwater by the use of small buoys which broadcast the position and time references by sonar signals.
    • And evidence that sonar kills whales goes way beyond coincidence.
    • For instance, he said, its active and passive sonar systems are aging, thus shortening the range of its monitoring.
    1. 1.1 An apparatus used in a sonar system.
      声波定位仪
      we reduced the sensitivity of our scanning sonars
      Example sentencesExamples
      • Autosub will be using sonars to study the seabed.
      • They will be equipped with the latest survey systems, including multi-beam echo sounders and modern side-scan sonars, as well as the most advanced navigation and communications systems.
      • It just seemed to me that it would be more interesting to have things like submarine sonars and old grandfather clocks and lines from famous movies and bird songs and things like that.
      • Acms receives data from the sonars and other sensors and, through advanced algorithms and data handling, displays real time images on the command consoles.
      • It is equipped with a ham radio set, personal computer, global positioning system, two sonars, autopilot and wind wane which steers the boat depending on the direction of the wind.
    2. 1.2 The method of echolocation used in air or water by animals such as bats or whales.
      声呐定位法
      the fishing nets are detectable by dolphin sonar
      Example sentencesExamples
      • Hearing the unusual ping, the animals might turn on their echolocators - their sonar - and then they can sense the net.
      • The animal's sensitive sonar is capable of picking up information about the shape of distant objects, and it was trained to respond in some distinctive way to this piece of information.
      • While the animals lack sonar, they do posses superb directional underwater hearing and the ability to see in near-darkness.
      • The knowledge the researchers gain about bat sonar is tested out on dolphins and applied to human sonar systems.
      • They believe that by being in the water with the animals and feeling their sonar they too are receiving a ‘healing’.

Origin

1940s: from so(und) na(vigation and) r(anging), on the pattern of radar.

随便看

 

英汉双解词典包含464360条英汉词条,基本涵盖了全部常用单词的翻译及用法,是英语学习的有利工具。

 

Copyright © 2004-2022 Newdu.com All Rights Reserved
更新时间:2025/1/14 19:05:47