共价键

Meanwhile, the β-cyclodextrin- modified chiral amine salt also exhibited the chiral inducibility in asymmetric epoxidation of chalcone.

通过共价键负载于β-环糊精的手性胺在查尔酮的不对称环氧化反应中也显示出立体诱导作用。

Therefore, the ductility and conductility of Co_3Ti should be better than those of CoTi.

计算结果显示H原子在Co_3Ti中与两种金属原子的结合以共价键为主导致脆性增加。

Copolymerize methacrylic acid 3(4′-N,N-dimethylamino) ketone xanthate and acrylamide were copolymerized with N,N-methylene bisacrylamide,and then combined with silane ethylene group in the form of covalent bond on the quartz glass shee t to be made into a sensor,to determine ethanol.

将甲基丙烯酸3-(4′-N，N-二甲氨基)黄酮酯和丙烯酰胺、N，N′-亚甲基双丙烯酰胺共聚并共价键合在硅烷化的含乙烯基团的石英玻片上，制成了可测定乙醇的传感器。

At this level, basic concepts such as bonding, ionic and covalent bonds are briefly introduced to students.

在这一级，基本概念，如氢键，离子和共价键简要介绍给学生。

First, cells are exposed to a chemical that creates covalent bonds between DNA and proteins bound to DNA.

首先，细胞暴露在一种能在DNA与其结合蛋白质之间形成共价键的化学物质中。

The complete covalent structure is tailed the primary structure.

完整的共价键结构尾的主要结构。

It was found that thecomposites existed in the formation of covalent bonding between TiO2 and polymer by infrared spectra.

红外普图分析了这种材料的化学构成，证明纳米TiO2与高分子是以共价键的形式存在。

This indicates that the ionic partitioning scheme is a useful partition way to covalent systems.

说明离子拆分模式是共价键体系&化整为零&的一条合理有效的途径。

It was found that the composites existed in the formation of covalent bonding between TiO2 and polymer by infrared spectra.

红外谱图分析了这种材料的化学构成，证明纳米TiO2与高分子是以共价键的形式存在。

Do not dissolve in any solvent ( no solvent has attractive forces strong enough to break the covalent bonds).

不溶于任何溶剂（没有溶剂有足够强的吸引力可以破坏其中的共价键）。

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。