电子透射密度计
electronic transmission densimeter
扫描透射密度计
scanning transmission densitometer
光电显像密度计
photoelectric densitometer
镜透射密度
specular transmission density
漫透射密度
diffuse transmission density
diffuse and transimission density
电离辐射密度计
ionizing radiation density meter
发射密度计
Transmission densitomefer
游离辐射密度计
ionizing radiation density meter
γ射线穿透式液体密度计
gamma-ray penetration type liquid density meter