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| Standard Code | Standard Title | Standard Class | Order |
|---|---|---|---|
| GB/T 20975.22-2020 |
Methods for chemical analysis of aluminium and aluminium alloys—Part 22:Determination of beryllium content 铝及铝合金化学分析方法 第22部分：铍含量的测定 |
China National Standards 22:Determination |
 English PDF |
| GB/T 5121.22-2008 |
Methods for chemical analysis of copper and copper alloys - Part 22:Determination of cadmium content 铜及铜合金化学分析方法 第22部分：镉含量的测定 |
China National Standards 22:Determination |
English PDF |
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