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1980年11月25日至27日由沈阳市科委和沈阳铁路局共同主持召开了“地道桥两节顶拉技术”鉴定会,会议地点在沈阳。参加会议的有辽宁省交通勘测设计院,城建研究院、情报所、石化局,天津市政工程勘测设计院,沈阳市橡胶制品一厂和铁道部专业设计院、沈阳铁路局等路内外31个单位55位代表。
November 25, 1980 to November 27 by the Shenyang Municipal Science and Technology Commission and the Shenyang Railway Bureau co-chaired the “tunnel two tunnels pull technology” appraisal meeting located in Shenyang. Participants at the meeting included Liaoning Traffic Survey and Design Institute, Urban Construction Research Institute, Intelligence Institute, Petrochemical Bureau, Tianjin Municipal Engineering Survey and Design Institute, Shenyang No.1 Rubber Factory and the Ministry of Railways Professional Design Institute and Shenyang Railway Administration. 55 delegates.