internal optical density

例句：

1. 1. The measurementof internal optical density is crucialfor the quality control of optical materials.
   内部光学密度的测量对于光学材料的质量控制至关重要。
2. 2. The research on internal optical densityhas significant implications for the development of newmaterials.
   关于内部光学密度的研究对新材料的发展具有重要意义。
3. 3. The internal optical density of a materialcan be used to determine its refractive index and absorption properties.
   材料的内部光学密度可以用来确定其折射率和吸收特性。