They are sometimes difficult to differentiate from aromatic or olefinic absorptions.

有时它们就难于和芳香族或烯烃的吸收峰相互区别.

辞典例句

Preferred activated olefinic groups are ( meth ) acrylates and especially acrylates.

首选激活烯组 ( 甲基 ) 丙烯酸酯和丙烯酸酯,尤其是.

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Hydroformylation of the olefinic atom economic method th introduce new functional group in the oil compounds.

而通过双键的氢甲酰化反应引入新官能团能为油脂的化工利用提供了一条广阔的道路.

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Activated olefinic bond Amine, thiol radical initiator, cationic initiator, dienes ( Diels - alder reactive ).

活性烯键胺, 巯基,引发剂, 阳离子引发剂, 烯烃 ( 的Diels-Alder反应 ).

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