有关: have sth. to do with; have a bearing on; relate to; concern; be in [with] relation to; involve; have relations with; in the way of; in [with] regard to; be connected with; in connection wi
管道: [工业] pipeline; channel; tunnel; piping; canalis; pipe run; duct; conduit; conduit pipe; ducting; line of pipes; pipe alley 短语和例子污水管道 soil pipeline; 煤气管道 gas pipe; 消防管道 fire fighting pipeli
