crystal refractoscope

例句：

1. 1.The crystal refractoscope is used to measure the refractive index of a material.
   晶体折射仪用于测量材料的折射率。
2. 2.In optics, the crystal refractoscope is used to analyze the properties of light.
   在光学中，晶体折射仪用于分析光的特性。
3. 3. The crystal refractoscope was invented by a scientist who wanted to improve the accuracy of his measurements.
   这位科学家发明了晶体折射仪，他想提高他测量的准确性。