短語詞組短語DREDGE OR UNDERWATER OPERATION 從事挖泥或水下作業(yè)船;疏濬或水下作業(yè)船Input or output operation 輸入或輸出操作OR -operation 或”運算;或Timer or continuous operation 定時或連續(xù)運行Standalone or inetd operation 支持兩種方式操作construction or in operation 施工期和運行期or arithmetic operation 轉(zhuǎn)換或算術(shù)操作溢出Ac Or Battery Operation 交流電或電池操作maintained or inching operation 保持或電動操作 返回 or operation