光学密度 meaning in English
optical density (od)
Examples
- Specification for optical densitometric measurements of printed maps
地图印刷光学密度量测规范 - Density optical demsity
密度光学密度 - Micrographics - test target of optical density measurement for microfilming negative
缩微摄影技术缩微摄影时检验负像光学密度用测试标板