单词 | alkene |
释义 | alkene ['æl.ki:n] noun countable specialized ■any gas in a group that contains carbon and hydrogen atoms, with the carbon atoms joined together in a double bond (= connection) 烯烃,链烯(碳原子以双键连结的碳氢化合物) •Ethene and propene are alkenes.乙烯和丙烯都是烯烃。 |
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