查询词典 preference bond

Ionic bond A bond formed when an electron passes from one atom to another.

离子键：一种由于电子在两个原子间迁移而产生的键。

There is also something called an ionic bond, which is a type of chemical bond in which positively charged ions are electrically attracted to negatively charges ions.

它们是相互吸引而形成几何排列的离子。

In addition, the 10 peptides are rich in basic amino acid residues and serine and threonine, it is likely that the peptides combine with iNOS FAD binding domain through formation of ionic bond and hydrogen bond.

因此，这些多肽很可能通过与iNOS的FAD结合区的酸性氨基酸形成离子键，以及通过丝氨酸或丝氨酸的醇羟基与酶分子的有关部位形成氢键而结合并起到抑制作用。

Scatchard analysis indicated that at least two different classes of recognition sites were formed during the course of self-assembly between monomers and templates through hydrogen bond or ionic bond.

Scatchard分析显示了功能单体甲基丙烯酸与模板分子阿替洛尔、美托洛尔在自组装过程中通过氢键和离子键形成了至少两类不等价的结合位点。

By analyzing the results,a mixed bonding state is found to exist in CIS,which is a strong ionic bond with a much weaker covalent bond. The interactions between Cu and Se are much stronger than that between In and Se.

计算发现CIS中存在共价键，是一种非典型的离子型晶体，在整个晶体内存在共用电子对，Cu原子和Se原子的作用大于Se原子和In原子。

The results showed that the atomic near neighbour distance varies linearly with the concentration in the substitution solid solutions with ionic and covalent bond, but varies nonlinearly in those with metallic bond.

本论文的目的是研究替代式固溶体中原子近邻结构的规律性。

Under irradiation of UV light, PR-DR changes its crosslinking structure from ionic bond to covalent bond and becomes insoluble in DMF. This character can be used in practice as a photo-imaging material.

在紫外光照下，PR-DR的离子键将转化为共价键从而不溶于DMF，因而可用作光成像材料。

There is a less difference of ionic bond in Ti_2AlC and Ti_2AlN, the covalent bond of Ti_2AlN is larger than that of Ti_2AlC. Analysis of the total density of states, the trend forming forbidden band of Ti_2AlC was more evident than that of Ti_2AlN, which made the conductivity of Ti_2AlN than Ti_2AlC.

从总态密度可见，Ti_2AlC和Ti_2AlN都有在最低导带和最高价带之间形成较窄的禁带的趋势，即表现出形成混合型导体的趋势，而Ti_2AlC形成禁带的趋势要比Ti_2AlN更为明显，这与Ti_2AlN的电导率大于Ti_2AlC的实验结果一致。

Covalent bond, ionic bond, metallic interaction and Van der Waals force. Different potentials can be constructed according to the different interactions. For different types of phenomena of some interaction, different potentials can also be constructed. So, a great variety of potentials can be found in literature.

可依据不同类型的相互作用如共价键、离子键、金属键和Van der Waals力等构建不同类型的原子间相互作用势，而且同一类型的相互作用也因所处理的性质或过程(如体积、表面、团簇、缺陷等)不同所采用的形式也不相同，这样就构建了大量的各种形式的原子间相互作用势。

The results show that the calculated cell parameters are in agreement with the experimental ones. The interactions between Li—N and Al—N are strong ionic bonds in Li3AlN2. The interaction between N and H is strong covalent bond and the interaction between Li and N is strong ionic bond in LiNH2. The calculated reaction enthalpies are 23.7 and 55.3 kJ/mol, respectively, which are in agreement with the experimental ones.

结果表明：Li3AlN2的Li—N、Al—N键主要为离子键，LiNH2的N—H键主要为共价键，Li—N键主要为离子键；298 K时贮氢反应的反应焓计算值分别为23.7和55.3 kJ/mol，与实验值均符合得较好；反应中各固态、气态物质的晶胞的结构优化后的晶格常数、键长与键角等与相应的实验值均符合较好。

Nowadays, most of research are to build a transmutative Petri Nets through adding controlling place sets, controlling arc sets and controlling policy to the basic Petri Nets, while the Controlled Petri Nets could be used to argue many controlling theory problems conveniently and to induce many logically and physically supervisory and solve the Event Feedback Controlling Problems and State Feedback Controlling Problem in DEDS supervisory theory.

目前大多数的研究表现为在变形后的受控Petri网基础上，利用各种方法求得各种逻辑型、结构型控制器，解决DEDS监控理论中的事件反馈控制问题与状态反馈控制问题。

On one hand, there are discussions with the works council and union about extension of short time working up to the end of September.

一方面，有讨论，工程理事会和联盟关于延长工作时间短至9月底。