汉英词典
Chinese-English Dictionary
MEANING OF 双键
双键 (雙鍵)
double bond (chemistry)
在化合物分子中两个原子间以共用两对电子而构成的键。通常用两条短线=”表示。如乙烯(ch2=ch2)、丙酮(﹉3ccch3o)等分子中的键。[hj]
() shuāng () jiàn
EXAMPLE SENTENCES

烯烃的双键:重点是反应活性。

The Alkene Double Bond: a Focus of Reactivity.

与二烯烃橡胶相比,EPDM的双键很少。

Compared with diolefine rubber, EPDM has less double bond.

我们来考虑一下如何划分单键、双键和三键。

Let's think about how we can classify single and double and triple bonds,.

脂肪酸被生物体转化成包含碳氧双键即羰基的醛。

The fatty acids are then converted by the organisms to an aldehyde that includes a carbon atom bonded to an oxygen atom (together they create what's called a carbonyl group).

烯烃:含有一对或多对由双键连接的碳原子的一类不饱和烃。

Olefin (or alkene) Any unsaturated hydrocarbon containing one or more pairs of carbon atoms linked by a double Bond (see covalent Bond, saturation).

肽键实质上具有稳定的双键特性,并且通过限制有效信息来影响蛋白质的特性。

The peptide bond has substantial rigid double-bond character and affects properties of proteins by limiting available information.

该氨酯油中引入了羧基阴离子和丙烯酸双键,用有机胺中和后溶于水中。

The resin can be solved in water by neutralizing carboxylic groups and double bonds therein with organic amine.

所建立的方法为不饱和脂肪酸碳链中双键位置的确定提供了新的技术手段。

The established method provides a new technical tool for the location of double bond positions in the polyunsaturated fatty acids.

本文还对漆酚类侧链中双键的存在形式,主要组成及变化进行了分析讨论。

Furthermore, the existing form, main composition and their variation of double bond in the side-chain of urushiols were discussed as well.

然后经过重排又转变成了一个具有碳碳双键的六员环体系,并在此基础上进一步发生脱氢反应。

Then a hexacyclic-ring system formed as a result of molecular recombination, based on which further dehydrogenation occurred.