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| Standard Code | Standard Title | Standard Class | Order |
|---|---|---|---|
| GB/T 3884.21-2018 |
Methods for chemical analysis of copper concentrates－Part 21:Determination of copper,sulfur,lead,zinc,iron, aluminium,calcium,magnesium,manganese content－Wavelength dispersive X-ray fluorescence spectrometric method 铜精矿化学分析方法 第21部分：铜、硫、铅、锌、铁、铝、钙、镁、锰量的测定 波长色散X射线荧光光谱法 |
China National Standards 21:Determination |
 English PDF |
| GB/T 5121.21-2008 |
Methods for chemical analysis of copper and copper alloys - Part 21:Determination of titanaum content 铜及铜合金化学分析方法 第21部分：钛含量的测定 |
China National Standards 21:Determination |
English PDF |
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