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| Standard Code | Standard Title | Standard Class | Order |
|---|---|---|---|
| GB/T 24586-2009 |
Iron ores - Determination of apparent density，true density and porosity 铁矿石 表观密度、真密度和孔隙率的测定 |
China National Standards density，true |
 English PDF |
| GB/T 9966.3-2001 |
Test methods for natural facing stones--Part 3:Test methods for bulk density，true density，true porosity and water absorption 天然饰面石材试验方法 第3部分:体积密度、真密度、真气孔率、吸水率试验方法 |
China National Standards density，true |
English PDF |
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