词汇	spacing convention
释义	spacing convention 间隔约定
随便看	optical acquisition equipment optical action optical activation energy optical active optical active matter optical activeness optical active phonon optical active polymer optical active substance Optical Active Surface Approach Fuze optical activit optical activity optical activity crystal optical activity method optical activity of oil optical activity, optical rotation opticity optical actuator optical adapter optical adaptive control optical adaptive technique Optical Add and Drop Multiplex optical add and drop multiplexer optical add-drop optical add-drop module Optical add Drop Multiplexer