短語詞組短語main steam pipeline 主蒸汽管路main drainage pipeline 主排水管道main gas pipeline network 主干輸氣管網(wǎng)main feed pipeline 主給水管路main -pipeline unit 母管制機(jī)組main machinery pipeline 干線管路10CrMo910 main steam pipeline CrMo910 主蒸汽管道main gas pipeline 長距離輸氣管道cargo oil main transfer pipeline 貨油輸送總管 返回 main pipeline