methyl cyclobutane甲基: methyl; methylium; carbinyl; ...环: ring; hoop丁烷: butane二亚甲基环丁烷: dimethylenecyclobutane1-氨基环丁烷羧酸: 1-aminocyclobutane carboxylic acid下载手机词典可随时随地查词查翻译