基本解釋[機(jī)械工程]號(hào)志臂木詞組短語短語enamelled semaphore arm 搪瓷臂板supplementary semaphore arm 臂板信號(hào)機(jī)的輔助臂板arm semaphore 號(hào)志臂木double -arm semaphore 雙臂板信號(hào)機(jī)upper quadrant single -arm semaphore signal 上曏單臂板信號(hào)機(jī)semaphore arm更多詞組專業(yè)釋義機(jī)械工程號(hào)志臂木