light guide refractometer

例句：

1. 1. This light guide refractometer is used to measure the refractive index of materials.
   这个光导折射仪用于测量材料的折射指数。
2. 2. The manufacturer claims that their light guide refractometer is more accurate than others.
   制造商声称他们的光导折射仪比其他人更准确。
3. 3.The engineer used the light guide refractometer to test the quality of the new lens.
   工程师使用光导折射仪测试了新透镜的质量。