Butylene

[bju:tili:n]

解释:

(noun.) any of three isomeric hydrocarbons C4H8; all used in making synthetic rubbers.

班森编辑--From WordNet

解释:

(n.) Any one of three metameric hydrocarbons, C4H8, of the ethylene series. They are gaseous or easily liquefiable.

整理:丽纳