1. Shoufang refraction industry to confront many issues can change the market? 拒绝收房折射行业诸多问题对抗能否改变楼市？
2. Shallow Seismic Refraction Survey is one kind of celerity, effective and economic means in engineering exploration. 浅层折射波法是工程勘探中常用的一种经济并且快速有效的方法。
3. Light reflection, refraction law of refraction imaging, imaging lenses, optical interference, diffraction, and so on. 光的反射、折射定律，折射成像，透镜成像，光的干涉、衍射等等。
英英解释
n.
1. the change in direction of a propagating wave (light or sound) when passing from one medium to anoth
2. the amount by which a propagating wave is bent
