photocuben.立方照片架(一种透明塑料立方体架；六面均可插放照片)photon.照片v.拍照photoconductive polymers光电导聚合物photoelectrostatic image光学静电像Photo electricity sensor光电传感器photorecombination laser光复合激光器photo-isolator trigger光隔离触发器photoreceptors of retina光感受器细胞photoperiodic mechanisms光周期机制photochemical activation光化活化photoelectric glossmeter光电光泽计Photolithography shutter光刻快门