释义 |
iso·prene \ˈ ̷ ̷ ̷ ̷ˌprēn\ noun (-s) Etymology: probably from is- + pr- (from propyl) + -ene : a flammable liquid diolefin hydrocarbon CH2 = C(CH3)CH = CH2 obtained usually by heating rubber or turpentine (sense 2) or in cracking petroleum and used chiefly in making synthetic rubber; 2-methyl-1,3-butadiene — see polyisoprene, terpene |