基本解释暗线导管英汉例句双语例句The cable connecting the antenna and the satellite receiver is laid by the type of threading conduit and concealed laying.天线至卫星接收机的连接电缆采用穿管暗敷方式。词组短语短语concealed steel conduit 暗敷钢导管专业释义机械工程暗线导管土木建筑工程暗线导管暗管