optical gyro光学陀螺opticaladj.视觉的；光学的Optical Add and Drop Multiplex光分插复用optical fiber vibration sensor光纤振动传感器optical axis adjustable device光轴调整装置optical beam deflection method光束偏转法optical fibre vibration sensor光纤振动传感器Optical fibre / light guide光学纤维optical experiment instruments光学实验仪器optical communication products光通信产品optical firecontrol instrument光学射击控制仪器optical instrument positioning光学定位