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| Standard Code | Standard Title | Standard Class | Order |
|---|---|---|---|
| GB/T 20975.21-2020 |
Methods for chemical analysis of aluminium and aluminium alloy—Part 21: Determination of calcium content 铝及铝合金化学分析方法 第21部分：钙含量的测定 |
China National Standards alloy—Part |
 English PDF |
| GB/T 19345.2-2017 |
Amorphous and nanocrystalline alloy—Part 2: Fe-based nanocrystalline soft magnetic alloy strips 非晶纳米晶合金 第2部分：铁基纳米晶软磁合金带材 |
China National Standards alloy—Part |
English PDF |
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