Home / Standards / GB/T 14353.14-2014 GB/T 14353.14-2014 Active Methods for chemical analysis of copper ores, lead ores and zinc ores—Part 14: Determination of germanium content 铜矿石、铅矿石和锌矿石化学分析方法 第14部分:锗量测定 Standard Type GBT ICS 73.060 CCS D40 Status 现行 Issue Date 2014-12-05 Implementation 2015-04-01 Responsible Dept 自然资源部(国土) Drafting Unit N/A