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China GB Standards List

 GB/T 33144-2016  
Superabrasive—Test method of impact toughness index

超硬磨料 冲击韧性测定方法《第1号修改单》
 GB/T 31057.3-2018  
Granular materials—Physical properties—Part 3: Fluidity index

颗粒材料-物理性能测试-第3部分:流动性指数的测量

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