Standard Method of Test for Density, Relative Density (Specific Gravity), or API Gravity of Crude Petroleum and Liquid Petroleum Products by Hydrometer Method
国外标准现行
标准号:AASHTO T 227-2002
标准名称: 粗集料的密度、比重和吸收性的标准试验方法
英文名称:Standard Method of Test for Density, Relative Density (Specific Gravity), or API Gravity of Crude Petroleum and Liquid Petroleum Products by Hydrometer Method