i.so.oc.tanen.(名词)A highly flammable liquid, (CH3) 2CHCH 2C(CH 3) 3, used to determine the octane ratings of fuels. 异辛烷:一种极易燃烧的液体,(CH3) 2CHCH 2C(CH 3) 3,用来测定燃料的辛烷等级