[化学 冶金] 异硒环,浓缩 condensed ring: 稠环condensed ring hydrocarbon: 稠环烃condensed ring system: 稠环系统linear condensed ring: 线型缩合环hetero-: heter(o)- comb.f. 表示“异”,“异型”,“其他”〔元音前用 heter-〕: heterogen. 下载手机词典可随时随地查词查翻译