optical sag视光垂度opticaladj.视觉的；光学的optical cavity diode光腔二极管optical transmission光传输optical probe method光探测法optical tank circuit光储能电路optical routing node光路由选择节点optical trigonometry光学三角法optical strainsensor光纤应变传感器optical imaging path[计] 光成像路径optical densitometer光密度计optical interpolator光学插补器