refractive power

例句：

1. 1. The lens in the microscope is designed to increase the refractance of light.
   显微镜中的透镜设计用来增加光线的折射率。
2. 2.The scientist used a prism to measure the refractance of light.
   科学家使用棱镜来测量光线的折射率。
3. 3.The optics of the telescope are crucial for maintaining high refractance.
   望远镜的光学系统对于保持高折射率至关重要。