optical artn.光效应绘画艺术；欧普艺术opticaladj.视觉的；光学的optical signal fade光信号衰落optical transmitter光发送机optical putter-on光学指示装置optical track pitch光轨间距optical application光学应用optical access port光接入端口optical conductance光传导Optical fiber sense光纤传感optical convolution光学卷积optical-noise map光-噪声图