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铁道部科技委于1980年5月5日至9日在北京召开了预应力钢筋混凝土槽形梁新技术审查会。参加会议的共有17个单位56人。会上先由预应力钢筋混凝土槽形梁研究设计试制小组成员铁道部第三勘测设计
The Ministry of Science and Technology Commission of the Ministry of Railways held a review meeting of new technologies for prestressed reinforced concrete trough girders in Beijing from May 5 to May 1980. A total of 17 units attended the meeting 56 people. At the meeting by the prestressed reinforced concrete trough beam research and design team members of the Ministry of Railways third survey and design