isooctane

i.so.oc.tane

n.（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