| 单词 | 烯烃 |
| 释义 | DEFINITIVE EXAMPLES 权威例句〔alkene〕Ethene and propene are alkenes.乙烯和丙烯都是烯烃。剑桥高阶〔alkylation〕A process in which an alkyl group is added to or substituted in a compound, as in the reaction of alkenes with alkanes to make high-octane fuels.烷化作用，烷基取代：向一种化合物中添加或用一个烷基团替代的过程，如用烯烃和烷烃发生反应以制得高辛烷值燃料美国传统〔aromatic〕The company said it would reduce olefins, aromatics, benzene, and sulphur in the gas blend.公司说将减少气体混合物中的烯烃、芳族化合物、苯、硫黄等。外研社新世纪 |
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