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我国第一台自行设计制造的集中差速式张减机鉴定会于1986年8月25日至29日在烟台召开,会议由冶金部主持,来自全国22个单位的43名代表参加了鉴定会。该项目是1982年5月由国家经委与冶金部下达的冶金部技术改造项目,由北京钢铁研究总院和烟台钢管厂共同承担,总经费45万元。两研制单位参照国外资料,把烟台钢管厂原φ108液压差式张减改造成集中差速
China’s first self-designed and manufactured centralized differential speed reduction machine identification will be held August 25, 1986 to 29 in Yantai, the meeting hosted by the Ministry of Metallurgical, from 22 units of the 43 representatives attended the appraisal will . This project was a technological transformation project of Ministry of Metallurgical Affairs issued by State Economic Commission and Ministry of Metallurgy in May 1982 and was jointly undertaken by Beijing Iron and Steel Research Institute and Yantai Steel Pipe Plant with a total funding of 450,000 yuan. Two research units with reference to foreign information, the original steel pipe factory in Yantai φ108 hydraulic differential type Zhangzhuang change caused by concentrated differential