vertical refraction coefficient

例句：

1. 1.The scientist used the vertical refraction coefficient to determine the speed of light.
   科学家使用垂直折射率系数来确定光速。
2. 2. The experiment measured the vertical refraction coefficient of different materials.
   实验测量了不同材料的垂直折射率系数。
3. 3. The researcher found that the vertical refraction coefficient varied with temperature.
   研究者发现，垂直折射率系数随温度变化而变化。