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在铁道部工业总局的领导下,于1981年3月5日至26日,在新乡市电气控制设备厂举办了一期CO_2气体保护焊机维修讲习班,有铁道部所属91
Under the leadership of the Industrial Administration of the Ministry of Railways, a maintenance workshop for CO2 gas shielded welding machine was held in Xinxiang City Electric Control Equipment Factory from March 5 to March 26, 1981, with 91