1)transmittancy,相对透射比2)relative reflectance,相对反射比3)radiographic contrast,射线透明对比度4)relative transmission density,相对透射密度5)relative specific activity,相对比放射性6)contrast radiography,对比射线照相法
用法例句
To evaluate laser camouflage effectiveness based on laser camouflage principle,three different methods,which were relative reflectance,camouflage range and camouflage coefficient,were put forward.
