Refractoloy

例句：

1. 1. The scientist used a refractometer to measure the refractive index of the glass.
   科学家使用折射计测量了玻璃的折射指数。
2. 2.The lens in the microscope has a high refractive index, which helps to focus light.
   显微镜中的透镜具有高折射率，有助于聚焦光线。
3. 3. The physicist calculated the refractive index of the medium using the law of reflection.
   物理学家使用反射定律计算了介质的折射率。