any of three isomeric hydrocarbons C4H8; all used in making synthetic rubbers
同义词：butene
butylene详细解释
bu.tyl.ene n.（名词）Any of three gaseous isomeric ethylene hydrocarbons, C4H 8, used principally in making synthetic rubbers. 丁烯：乙烯的三种气态同分异构体之一，C4H 8，主要用于制造合成橡胶
