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单词 Relative reference
释义

Relative reference

原声例句
传说之境

Now unless we wanted to have literally hundreds of months in the year, using these moons as a relative reference is just not going to be practical.

现在，除非我们想要一年中有几百个月，否则使用这些卫星作为相对参考是不切实际的。

中文百科

参考系 Frame of reference

（重定向自Relative reference）
观测者O位于一组坐标（参照系F）的原点。该参照系使用的本地坐标(x, y, z, t)来表示时空事件（以星形表示）。
狭义相对论中的三个参考系。黑色的为静止的。带撇号的参考系以光速的40%速度运行，带两个撇号的则以光速的80%运行。注意当速度提升时，坐标线呈剪刀状变动。
两辆车以不同的均速移动，S为固定在路面的惯性参考系，而S' 为固定在第一辆车上的惯性参考系。
Figure 2: Simple-minded frame-of-reference example

参考系（又称参照系、参考坐标），在物理学中指用以测量并纪录位置、定向以及其他物体属性的坐标系；或指与观测者的运动状态相关的观测参考系；又或同指两者。

英语百科

Frame of reference 参考系

（重定向自Relative reference）
An observer O, situated at the origin of a local set of coordinates – a frame of reference F. The observer in this frame uses the coordinates (x, y, z, t) to describe a spacetime event, shown as a star.
Three frames of reference in special relativity. The black frame is at rest. The primed frame moves at 40% of light speed, and the double primed frame at 80%. Note the scissors-like change as speed increases.
Figure 1: Two cars moving at different but constant velocities observed from stationary inertial frame S attached to the road and moving inertial frame S′ attached to the first car.
Figure 2: Simple-minded frame-of-reference example

In physics, a frame of reference (or reference frame) consists of an abstract coordinate system and the set of physical reference points that uniquely fix (locate and orient) the coordinate system and standardize measurements.

In n dimensions, n+1 reference points are sufficient to fully define a reference frame. Using rectangular (Cartesian) coordinates, a reference frame may be defined with a reference point at the origin and a reference point at one unit distance along each of the n coordinate axes.
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