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China GB Standards List

 GB/T 4197-1984  
Method for measuring the average grain size of sintered bar and rod of tungsten molybdenum and alloys
钨钼及其合金的烧结坯条、棒材晶粒度测试方法
 GB/T 3850-1983  
Impermeable sintered metal materials and hardmetals--Determination of density
致密烧结金属材料与硬质合金密度测定方法

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