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| Standard Code | Standard Title | Standard Class | Order |
|---|---|---|---|
| GB/T 42800-2023 |
High purity opaque quartz glass {译} 高纯不透明石英玻璃 |
China National Standards opaque |
 English PDF |
| GB/T 30515-2014 |
Petroleum products―Transparent and opaque liquid―Determination of kinematic viscosity and calculation of dynamic viscosity 透明和不透明液体石油产品运动黏度测定法及动力黏度计算法 |
China National Standards opaque |
English PDF |
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