钢铁及合金化学分析方法 亚硝基R 盐分光光度法测定钴量
Methods for chemical analysis of iron，steel and alloy--The nitroso-R-salt spectrophotometric method for the determination of cobalt content
1994-01-17
HB 5220.26-2008
高温合金化学分析方法 第26部分:亚硝基R盐吸光光度法测定钴含量
Methods for chemical analysis of superalloys-Part 26:Determination of cobalt content by nitroso-R-salt photometric method