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| Standard Code | Standard Title | Standard Class | Order |
|---|---|---|---|
| GB/T 7731.4-2021 |
Ferrotungsten—Determination of phosphorus content—Phosphorus molybdenum blue spectrophotometric method 钨铁 磷含量的测定 磷钼蓝分光光度法 |
China National Standards content—Phosphorus |
 English PDF |
| GB/T 14849.7-2015 |
Methods for chemical analysis of silicon metal—Part 7: Determination of phosphorus content—Phosphorus molybdenum blue spectrophotometry 工业硅化学分析方法 第7部分：磷含量的测定 磷钼蓝分光光度法 |
China National Standards content—Phosphorus |
English PDF |
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