reflectance ratio

例句：

1. 1. The new camera has a higher reflectance ratio than the old one.
   这款新相机的反射率比旧款高。
2. 2. The scientist used this device to measure the reflectance ratio of the material.
   科学家使用这个装置来测量材料的反射率比。
3. 3. The engineer calculated the reflectance ratio for the coating on the window.
   工程师计算了窗户涂层的反射率比。