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1974年4月17～22日,一机部和燃化部在唐山开滦唐家庄矿召开了XJM—4型浮选机鉴定会。参加会议的有全国各地有关使用、科研、设计、制造、高等院校和领导机关的39个单位,共80名代表。会议以批林批孔为纲,认真学习了人民日报的重要社论。全国劳动模范唐家庄矿老工人吴旭芝给代表们作了报告,使大家受到了深刻的教育。通过对该设备的介绍,座谈和现场的观察,
April 1974 April 17 ~ 22, a machine and the Ministry of combustion in Tangshan Kailuan Tangjiazhuang mine held XJM-4 flotation machine identification meeting. Attending the conference were 39 units all over the country on the use, research, design, manufacture, institutions of higher learning and leading organs with a total of 80 delegates. The meeting approved the approval of Lin and Kong as a key link and earnestly studied the important editorials of the People’s Daily. Wu Xuzhi, an old worker from Tangjiazhuang, a model worker in the country, gave a report to the deputies, giving everyone a profound education. Through the introduction of the equipment, discussion and observation of the scene,