Crude petroleum and liquid or solid petroleum products - Determination of density or relative density - Capillary-stoppered pyknometer and graduated bicapillary pyknometer methods (ISO 3838:2004)
原油和液体或固体石油产品.密度或相对密度的测定.毛细管塞比重瓶和刻度双毛细管比重瓶法(ISO 3838-2004)