查询词典 double bond

They react by adding other chemical agents at the double bond to form derivatives or polymers.

这些化合物的最大用途在于双键与其它化学物质的反应。

The result shows that both of the two C-C double bond are exist as a trans configuration. The dihedral angle between benzene ring was 24.6°and 37.5°respectively.

发现均二苯乙烯荧光团的两个双键都是以反式结构存在，并且分子中的苯环并非完全共平面，相邻苯环之间的夹角分别为24.6°和37.5°。

The mechanism was supposed as follows: polyfluoroalkyl iodides were initiated by sodium dithionite to give R〓 which was added to one double bond of diallylacetic acid, after the sequential radical cyclization and nucleophilic substitution to form bicyclo-lactones.

这是因为：多氟烷基碘化物在连二亚硫酸钠的引发下，得到自由基R〓，后者加成到二烯丙基乙酸中的一个—C=C—双键上，然后在碱性介质中进行分子内亲核反应得到双环内酯类产物。

If there is just one double bond then it is monounsaturated.

如果只是一个双键那麼它就是单。

The heat-resistance is improved by the addition of initiator to control the content of double bond.

通过加入适量的引发剂控制体系的双键含量，可有效提高SBS的耐热性。

At high temperature, free radicals tend to form double bond.

在高温时，自由基倾向形成双键。

It may result from the coupling of acarbonyl group in one molecule with the double bond in another molecule.

它是由一分子环丁烯二酮的羰基碳与另一分子的双键β-碳发生还原偶联的结果。

The results showed that the double bond in the molecule played animportant role to the cytotoxicity.

结果表明，此类化合物的细胞毒性与其分子中双键存在与否有着重要的关系。

Typically, bonds with some degree of double bond character are excluded from minimization so that planarity is preserved.

特别的，有一定程度双键特点在最小化是将被排除从而保留了平面。

Lyase An enzyme that catalyzes the separation of two parts of a molecule with the formation of a double bond in one of them.

裂解酶：一类能催化一个分子的两部分分离，并在其中一个上形成双键的酶。

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。