phototuben.光电器photon.照片v.拍照photo-electrochemistry光电化学photoperiodical reaction光周期反应photoaccoustic detection光声检测photoconductive detector光电导检测器,光电导探测器Photosensitive colophony光敏树脂photo source compensates光源补偿photogrammetric platting摄影测绘图photoactivation reaction光活化反应photoelectricity sensing光电传感photoelectric multiplier光电倍增器