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冶金部在云南锡业公司古山采选厂主持鉴定了GPS-900-3型高频细筛,来自设计、科研、生产等部门的68位有关专家参加了鉴定。
The Ministry of Metallurgy hosted and appraised the GPS-900-3 high-frequency fine screening at the Yunnan Ancient Mining Company, and 68 experts from the departments of design, research and production participated in the appraisal.