isobutylene isopreneisobutyleneisoprene异: different丁烯: butylene; butene甲基: methyl; methylium; carbinyl; ...丁二烯: butadiene; pyrrolylene butad ...异丁橡胶；异丁烯一甲基丁二烯共聚物: isobtylene-isoprene copolymer下载手机词典可随时随地查词查翻译
