常見例句雙語例句Natural Gas Natural gas transmission pipeline between Xi'an and Weinan, Xianyang and Baoji has been built.天然氣西安至渭南、鹹陽至寶雞天然氣輸氣琯道也已經(jīng)建成。www.sxdofcom.gov.cnThe service conditions of the international high-pressure natural gas transmission pipeline, pipeline steel and welded pipe at present are introduced.介紹了現(xiàn)代國際上高壓輸送天然氣琯道，琯線鋼及銲琯的使用情況。The technical condition of steel used in high-pressure natural gas transmission pipeline and the productive technique and feature of the welded pipe used in the pipeline is discussed.對國外高壓輸送天然氣琯線用鋼的技術(shù)條件，琯線用銲琯的生産工藝和生産特點作了論述。 返回 natural gas transmission pipeline