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1981年11月7日,冶金部矿冶研究总院进行了“八一届选矿工程研究生毕业论文答辩会”。三位研究生在会上报告了自己的研究成果,解答了答辩委员会委员们提出的疑问,虚心地接受了一些正确的意见,顺利地通过了这次国家考核,按计划完成了研究生的学业。答辩委员会由矿冶研究总院副院长兼总工程师张卯均高级工程师、东北工学院丘继存教授、北京钢铁学院姚书典副教授、矿冶研究总院副总工程师兼选矿研究室主任吕永信高级工程师、矿冶研究总院高级工程师幸伟中副博士等五人组成。
November 7, 1981, Ministry of Metallurgical Research Institute of Mining and Metallurgy conducted the “eight one ore dressing project graduate dissertation defense.” The three postgraduates reported their research results at the meeting, answered the questions raised by the panel members, humbly accepted some correct opinions, successfully passed the state assessment, and completed the postgraduate studies on schedule. The defense committee consists of senior vice president Zhang Maojun, vice president and chief engineer of the Research Institute of Mining and Metallurgy, Professor Qiu Juxun of Northeastern University of Technology, associate professor Yao Shudian of Beijing Institute of Iron and Steel, senior engineer of Lv Yongxin, deputy chief engineer and beneficiation research director of Mining and Metallurgical Research Institute, General Hospital Senior Engineer Fortunately, Dr. Wei and other five members.