美利体育登录入口官网:NF EN 16117-1:2011 铜及铜合金 铜含量的测定 第1部分:铜含量小于99.85%的合金中铜含量的电重法测定
Copper and copper alloys - Determination of the copper content - Part 1: determination by electrogravimetry of the copper content in alloys having a copper content less than 99.85%