论文部分内容阅读
1988年11月15～19日,昆明公司受中国有色金属工业总公司的委托,组织65名高级工程师、工程师和技术工人在云锡公司对云
From November 15 to November 19, 1988, Kunming Company was entrusted by China Nonferrous Metals Industry Corporation to organize 65 senior engineers, engineers and skilled workers at Yunxi Company