T227-1993 用比重計法測定原油和液態(tài)石油產(chǎn)品的密度 相對密度(比重) 或 API 比重的標(biāo)準(zhǔn)規(guī)范(第十九版;ASTM D1298-85(1990))
Standard Specification for Density@ Relative Density (Specific Gravity)@ or API Gravity of Crude Petroleum and Liquid Petroleum Products by Hydrometer Method (Nineteenth Edition; ASTM D1298-85(1990))