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1991年10月15日云南省冶金工业总公司科技处、昆明冶金研究所、鸡街冶炼厂共同召开了关于JY系列铅酸蓄电池扳栅合金化学分析方法、硫代米蚩酮吸光光度法测定粗铅中的银鉴定会。到会者有:云锡研究所、省技术鉴督局、省商检局、昆明冶炼厂、个旧市技术鉴督局、云南大学、省冶金工业总公司科技处、昆明冶金研究所、鸡街冶炼厂等单位的学者和专家。
October 15, 1991 Yunnan Science and Technology Department of Metallurgical Industry Corporation, Kunming Institute of Metallurgy, Jixi smelter jointly held on the JY series lead-acid battery pull gate alloy chemical analysis methods, thiophanolol spectrophotometric determination of crude Lead in the silver identification will. Attendees include: Yunnan Institute of tin, the Provincial Technical Supervision Bureau, the Provincial Commodity Inspection Bureau, Kunming Smelter, Gejiu City Technical Supervision Bureau, Yunnan University, Provincial Metallurgical Industry Corporation Technology Department, Kunming Institute of Metallurgy, Chicken Street Smelting Plant and other units of scholars and experts.