查询词典 a bond

A more realistic description of a covalent bond at higher stretching is provided by the more expensive Morse potential .

更现实的描述高拉伸的共价键用更繁琐的 Morse 势能。

A molecule or ion that can combine with another by forming a covalent bond with two electrons of the other.

分子，离子：可通过两个电子形成共价键而结合在一块的分子或离子 4。

Form three bonds by sharing and a fourth using the lone pair in a dative covalent bond.

在配位共价键中形成了3 个共用的键和第4 个孤对电子的键。

Construction contract guarantee/bond is an effective credit instrument to guarantee the performance of a construction contract. At the same time, it is a common approach in the international building as well.

工程保证担保是国际上工程风险管理以及有效地保障了合同履行的一种有效的信用工具，同时，也是国际建筑业的一种通行做法。

A document indicating ownership or creditorship; a stock certificate or bond.

有价证券：标明所有权和债权的文件；股票证书或证券

Whereas the tin hydride is used, for preparing functional fivemembered rings ,to induced alkenyl radical translocation/ cyclization process ——oxidaton process by selective activation of a C H bond——developed by Curran et al., thiophenol, non-tin chemical, is used in this new synthetic method for preparing cyclopentane derivatives through a 1,5-hydrogen transfer/cyclization sequenceEq.

在这些目标中，发展无毒、环保试剂实施有效的自由基反应是一具有挑战性的目标。Curran等发明了用氢化锡介导的自由基易位/环化过程是一种通过C H键的选择性氧化制备功能五元环的高效的方法。

The key to the Cygnet, though, won't be the performance angle--a somewhat astonishing statement from a brand that's known for sheer performance, not to mention the gadgetry of the James Bond cars.

的关键，小天鹅，但不会表现的角度-一个有点令人吃惊的声明，从品牌，最为人所熟知的纯粹的表现，更不用提配件的007辆。

"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。

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。

Nylon 66 is the element Prof. Searl chose to use and he used it because it has a high negative content and it also has a double bond configuration.

尼龙66是要素教授塞尔选择使用，他使用它，因为它具有较高的消极内容和它也有双键的配置。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。