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根据一机部新产品试制计划,由洛阳拖拉机研究所和天津机械厂共同负责的农用中高压齿轮泵(5模数组)的试制工作,已于一九七七年十一月完成了试制试验工作。一九七七年十二月十六日至二十一日在天津由天津市一机
According to a trial plan for a new product of a machine department, the trial production of agricultural medium and high pressure gear pumps (5 modules) co-led by Luoyang Tractor Institute and Tianjin Machinery Factory completed the trial production in November 1977 jobs. From December 16 to December 21, 1977 in Tianjin by a machine