optical gyro光学陀螺opticaladj.视觉的；光学的optical fiber distribution box光纤分线箱optical curve grinding machine光学曲线磨床optical-electrical catalysis光电催化optical fibre active connector光纤有源连接器optical absorption coefficient光吸收系数optical-electronic measuring光电检测optical arteriovenous oximeter光学动静脉血氧定量计Optical Add-drop Multiplexer光分插复用（OADM）optical fiber cable connection光缆接续optical wireless communication无线光通信