octane

• 石油中存在的多种同分异构饱和烃中的任何一种，用作燃料和溶剂，是汽油的重要成分。

Any of various isomeric saturated hydrocarbons found in petroleum, used as a fuel and solvent.

1. Chemical compoundC1formalscientific

   Any of several isomeric saturated hydrocarbons with the formula C8H18, found in petroleum and used as a fuel and solvent.

   化学化合物

   • Octane is a key component in gasoline.
   • The laboratory synthesized a pure sample of octane.
   • Different isomers of octane have varying combustion properties.

2. Fuel rating indicatorB2formaltechnical

   A measure of the performance of a fuel, specifically its ability to resist knocking during combustion.

   辛烷值

   • High-performance cars require fuel with a higher octane rating.
   • Using low octane fuel can cause engine knocking.
   • The octane number indicates the fuel's resistance to premature detonation.

   同义词octane numberoctane rating