photoxic光损伤
photon.照片v.拍照
photoperiodic counter光周期计数器
photoelectric systems光电系统
photoelectric tracing光电跟踪
photoelectric tracker光电跟踪仪
photoconductivity ainn.光导增益
photoeleetrocatalysis光电催化
photoelectron counter光电子计数器
Photoelectric transit光电经纬仪
Photodynarnic therapy光动力过程
photoelectric trigger光电触发