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1985年10月21日～25日,在沈阳召开了第五届难熔金属学术交流会。本届难熔金属学术交流会是由沈阳有色金属加工厂、科学院金属研究所和宝鸡稀有
October 21, 1985 ~ 25, held in Shenyang, the fifth refractory metal academic exchange. The refractory metal academic exchange is non-ferrous metal processing plants in Shenyang, Institute of Metal and precious rare Baoji