spectral transmittance meaning in English

光谱渗透性
光谱透射比
光谱透射率
光谱透射系数

Photographic lenses ; method for measuring the spectral transmittance
照相机镜头.光谱透射比的测量方法
Photography - camera lenses - measurement of iso spectral transmittance
摄影.摄影镜头. iso光谱透射率的测量
Photography - camera lenses - method for measuring iso spectral transmittance
摄影.摄影机镜头.测量iso光谱透射率的方法
Testing of fibre optic elements ; determination of spectral transmittance of light guides
光纤元件的检验.第2部分:光导体光谱透射系数的测定