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| Standard Code | Standard Title | Standard Class | Order |
|---|---|---|---|
| GB/T 26019-2010 |
Methods for chemical analysis of high impurity tungsten mineral - Determination of tungsten trioxide content - Twice separation and igniting gravimetric method 高杂质钨矿化学分析方法 三氧化钨量的测定 二次分离灼烧重量法 |
China National Standards Twice |
 English PDF |
| GB/T 20264-2006 |
Grain and oilseed - Determination of moisture content - Twice drying method 粮食、油料水分两次烘干测定法 |
China National Standards Twice |
English PDF |
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