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Determination of density by means of an air pyknometer. 密度的空气比重瓶测定法。
Part 3: determination of density by liquid displacement pyknometer 第3部分:用液体置换比重计法测定密度
Plastics -- Methods for determining the density of non-cellular plastics -- Part 1: Immersion method, liquid pyknometer method and titration method 塑料.;非泡沫塑料的密度测定方法