optical artn.光效应绘画艺术；欧普艺术opticaladj.视觉的；光学的optical rangefinder光学测距仪optical equivalence光学等效optical noise level光学噪声级,光学噪声电平optical frequencies光频段optical superposing光叠加optical WDM network渡分复用光网络Optical replication光学复制optical path length光学距离optical normal line光学法线optical sound track光录声迹