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煤炭部一九七八年八月十四日至十八日在北京煤矿学校召开了“KTA 型电机车脉冲调速装置技术鉴定会”。会议由煤炭部科技局、生产司共同主持。参加会议的有煤炭部、一机部、冶金部的有关局、厂、矿、科研单位、大专院校和北京市科委等45个单位63名代表。会议听取了北京矿务局“直流架线式电机车可控硅脉冲调速装置”试验组的工作汇报、
The Ministry of Coal Mine held the “Technical Appraisal Meeting of Pulse Speed Regulator of KTA Electric Locomotive” at Beijing Coal Mine School from August 14 to August 18, The meeting was co-chaired by the Bureau of Science and Technology and Production of the Ministry of Coal Industry. Attending the meeting were 63 representatives from 45 units including the Ministry of Coal, the Ministry of Machine Building and the Ministry of Metallurgy, the relevant bureaus, factories, mines, scientific research institutes, tertiary institutions and the Beijing Municipal Science and Technology Commission. Meeting heard the Beijing Mining Bureau “DC overhead locomotive silicon controlled-pulse pulse speed device” test group work report,