optically thin medium

例句：

1. 1. The light passing through the optically thin medium is very weak.
   通过光学薄介质的光非常弱。
2. 2.This material is used in optically thin mediums to reduce light scattering.
   这种材料用于光学薄介质中以减少光散射。
3. 3. The optically thin medium acts as a filter for wavelengths that are too long or too short.
   光学薄介质作为滤波器，用于过滤波长过长或过短的光线。