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辛烷值。辛烷值代表点燃式发动机燃料抗爆性的一个约定数值,在规定条件下的标准发动机试验中,通过和标准燃料进行比较来测定,采用和被测定燃料具有相同抗爆性的标准燃料中异辛烷的体积百分数表示。测定辛烷值的方法不
Octane number. The octane number represents an agreed value for the ignition resistance of a spark ignition engine and is determined by comparison with a standard fuel in a standard engine test under the specified conditions using a standard fuel of the same antiknock as the fuel being tested The volume percentage of octane is expressed. The method of measuring octane number is not