ONORM B 3121-1978 Testing of natural stone density apparent density bulk density《天然石材测试 密度；表观密度；容积密度》.pdf

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YC T 473-2013 烟丝表观密度、真密度和内孔容积的测定.pdf

GB 9891-1988 胶乳海绵表观密度测定.pdf

MSZ 1427 1 lap-1966 《漏斗流塑料表观密度》.pdf

MSZ 1427 2 lap-1966 《检测塑料塑料表观密度》.pdf

HG T 3055-2012 胶乳海绵表观密度测定.pdf

HG T 3055-1988 乳胶海绵表观密度测定.pdf

GB T 24586-2009 铁矿石.表观密度、真密度和孔隙率的测定.pdf

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