镍镍合金 meaning in Chinese

o nickel and nickel alloys

Specification for general requirements for chemical check analysis limits for nickel , nickel alloys and cobalt alloys
镍镍合金及钴合金化学检验分析限值一般要求规范
Standard specification for general requirements for chemical check analysis limits for nickel , nickel alloys , and cobalt alloys
镍镍合金及钴合金的化学检验分析限值一般要求的标准规范