photofetn.光控场效应晶体管photon.照片v.拍照photolectric photometry[电] 光电测光photocathode resistance光阴极电阻Photochemical reduction光化学还原photoelectronic control光电控制photobacterium bioassay发光细菌毒性测试photocatalytical diodes光催化二极管photo-copying machine照相复印机photoelectric following光电跟踪Photoelectric-transit光电经纬仪photolectric inspection[电] 光电检验