Standard practice for calibration of transmission densitometers 透射密度计校准的标准规程
2.
Scanning transmission densitometer 扫描透射密度计
3.
Graphic technology - process control - certified reference material for opaque area calibration of transmission densitometers 制图技术.过程控制.透射密度计在不透明区校准用的检定参照样