refraction

名词 refraction:

1. the change in direction of a propagating wave (light or sound) when passing from one medium to another
2. the amount by which a propagating wave is bent
   同义词：deflection, deflexion

1. Having one direction along which double refraction of light does not take place. Used of a crystal.
   单轴晶体的有一个方向的，沿此方向不发生光的双折射。用于晶体

re.frac.tion

n.（名词）
The turning or bending of any wave, such as a light or sound wave, when it passes from one medium into another of different density.
折射： 当光或声波等物质从一个媒体进入别一个密度不同的媒体中时产生的转向或折回
Astronomy The apparent change in position of celestial objects caused by the bending of light rays entering Earth`s atmosphere.
【天文学】 大气折射：由于天体的光线进入地球大气层时发生折射而造成的其位置明显改变
Medicine
【医学】
The ability of the eye to bend light so that an image is focused on the retina.
眼睛的折射力：眼睛折射光线的能量，从而使物体形象集中于视网膜上
Determination of the refractive characteristics of the eye.
屈光度测定：对眼睛折射特性的测定

【引伸】
refrac.tional 或
refrac.tive
adj.（形容词）
refrac.tively
adv.（副词）
refrac.tiveness 或
re.fractiv.ity