photofetn.光控场效应晶体管photon.照片v.拍照photosynthetical system光合系统photocatalytic compound复合体光催化剂photo-conductive film光电导薄膜photo-audio generator光电式音频信号发生器photovohaie - thermal光伏／光热photovisual achromation光化视学消色差性photosynthetic membrane光合作用膜photo-instrumentationn.光安装photoallergic mechanism光变应性机理photoelectric comparato光电比测器