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| International Standard Category: Other non-ferrous metals and their alloys |
GB/T 12690.17-2010 Chemical analysis methods of non-rare earth impurities in rare earth metals and the oxides—Part 17:Determination of niobium and tantalum contents of rare earth metals
稀土金属及其氧化物中非稀土杂质化学分析方法 第17部分：稀土金属中铌、钽量的测定;
| Category No.: | 77.120.99 | Valid Status: | valid |
| Issued Organization: | AQSIQ; SAC | Issued Date: | 2011-1-14 |
| Implemented Date: | 2011-11-1 | Abolished Date: | |
| Superseded Standard.: | Superseded Date: |
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