查询词典 double bond

"Olefins may be classified by whether the double Bond is in a ring or a chain or by the number of double Bonds (monoolefin, diolefin, etc.)."

有两种分类方法︰一、分为环烯烃和非环烯烃，双键依次位于成环碳原子之间或开链基团的碳原子之间。

The peptide bond has partial double bond character and is nearly always in the trans configuration.

半胱氨酸残基之间共价二硫键的位置也包括在一级结构之中。

The amino group does not ionize between ph o and 14 due to the double-bond properties of the peptide bond.

由于肽键的双键性质，亚氨基在pH0～14之间均不能离子化。

It provides a route tothe compounds which contains three functional groups, two carbon-nitrogentriple bonds and one carbon-carbon double bond. In water, metallic indiumpromotes carbon-sulfur bond coupling reaction of aromatic sulfonyl chloride withsuitable organic halides to afford sulfones. In the last chapter, metallic tin mediated allylation of aldimines with allylbromide was revealed.

第三章，我们研究了在水相介质中金属铟促进的烯丙基溴对1，1-二氰基-2-芳基乙烯的Michael加成反应，生成一个含碳碳双键和二个碳氮叁键的三官能团化合物，另外，金属铟在水介质中还可以促进芳基磺酰氯与卤代烃发生碳硫键的偶联，生成砜。

They suggested that radicals with a double bond 13 to the carbon bearing the peroxy groups (which can only arise from acids containing more than two double bonds) cyclize to form peroxides with five-membered rings.

他们认为连接过氧基的碳原子有一个双键的游离基(只有多于两个双键的酸可形成)环化形成五元环的过氧化物。

The triple bond does not usually react so vigorously at a carbon-carbon double bond .

三键在反应时一般不象烯烃中的碳-碳双键那样剧烈。

Organic molecules in the double bond or triple bond was broken, added of other atoms or groups of reaction is called addition reaction ...

有机物分子中的双键或叁键发生断裂，加进其它原子或原子团的反应叫加成反应。。。。

Olive oil: 40 years ago, has come from seven countries, the Institute reported that monounsaturated: The olive oil contained inside only one double bond or triple bond-containing compounds, particularly of fatty acids (such as oleic acid have great to reduce the prevalence of heart disease and cancer.

1：橄榄油，40年前，来至7个国家的研究所报告指出单不饱和的：橄榄油里含有只含一个双键或三键的化合物，尤指脂肪酸(如油酸具有很大减低心脏病和癌症的患病率。

Increased. In addition, the life of light can also make the blood of unsaturated fatty acid double bond or triple bond was cut, and saturated fatty acids is not easy to be oxidized lipid , a decrease of intravascular lipid deposition, so that the vessel wall smooth, thus reducing atherosclerosis, cataracts, such as cardiovascular disease or the occurrence of eye disease, health promotion plays a good efficacy.

此外，生命光线还可以使血液中不饱和脂肪酸的二重键或三重键被切断，饱和脂肪酸不容易再被氧化成血脂，减少了血管内脂质的沉积，使血管壁光滑，从而减少动脉硬化、白内障等心血管疾病或眼科疾病的发生，对人体健康起着良好的促进功效。

However, if some of the hydrogen atoms are absent and the usual single bond between carbon atoms has been replaced by a double bond, then it is unsaturated.

但是，如果一些氢原子也没有和通常的单键碳原子之间已取代双键，那麼它就是不饱和。

What are your goals and strategies for growth?

你的成长目标和策略是什么？

And unto the angel of the church in Sardis write; These things saith he that hath the seven irits of God, and the seven star I know thy works, that thou hast a name that thou livest, and art dead.

3：1 你要写信给撒狄教会的使者，说，那有神的七灵和七星的，说，我知道你的行为，按名你是活的，其实是死的。