branched-chain hydrocarbon支: branch; offshoot键: key烃: hydrocarbon闭键烃: closed-chain hydrocarbon双键烃: doublebonded hydrocarbon; double-bondedhydrocarbon下载手机词典可随时随地查词查翻译关注微信公众号：chachacidian，回复:支键烃，即可在微信中查询翻译
