论文部分内容阅读
1984年10月7日至8日,中国有色金属工业总公司委托西安公司对宝鸡稀有金属加工研究所研制的“三层复合异型接点材料”
October 7, 1984 to 8, China Nonferrous Metals Industry Corporation commissioned by Xi’an, Baoji Institute of rare metals developed by the “three-layer composite shaped contact materials”