电负性

Secondly,sheath structures of strong electronegative plasmas are investigated, using a fluidtheory.

2采用流体理论研究了强电负性等离子体的鞘层结构。

The strongest attraction between two dipoles is when one or both of them involves a bond between hydrogen and a strongly electronegative atom, like oxygen, fluorine, or nitrogen.

氢键：氢键是极性很强的X－H键上的氢原子与另外一个键上电负性很大的原子上的孤对电子相互吸引而形成的一种键。

The oxidation number of an element in any chemical entity is the charge which would be present on an atom of the element if the electrons in each bond were assigned to the more electronegative atom.

氧化数是指某元素一个原子的电荷数，这种电荷数由假设把每个化学键中的电子指定给电负性更大的原子而求得。

On the basis of the molecular branching index of Randic,by adding Pauling molecular electronegative,a new molecular topological index was proposed and used to correlate between the chemical structures of haloalkane s and their boiling point at normal pressure.

在Rand ic提出的分子支化度指数的基础上，引进了卤原子的电负性，提出了一种新的拓扑指数，并对饱和卤代烃在常压下的沸点与化学结构之间的关系进行研究，建立了回归方程，相关系数达到0.995，预测值与实验值基本吻合

Meanwhile, the researches on the plasma sheath are notenough, especially the research on the sheath characteristic of the electronegative plasma. Forthe great amount of negative ions that exist in some plasmas processes have impact on thestructure of the sheath dramatically.

但等离子体鞘层的研究工作还不够完善，特别是电负性等离子鞘层特性的研究，由于在某些等离子体加工中存在大量的负离子，会对鞘层结构产生很大的影响。

On the electronegative elements, bonding electron number and bonded hydrogen atomic number, new molecular topological index is developed to do research on creaturely activity for alcohol, aether, ketone and ester in this paper.

基于元素的Pauling电负性，原子成σ键的电子数，原子直接键连的成σ键的氢原子数目和原子在形成离域π键时所提供的P电子数，定义了一种原子点价公式，构建了分子连接性指数。

The general judgment of ferroelectrics perovskite stability using the tolerance factor and electronegative value of force difference,the stability of ferroelectrics perovskite can be well explained.

利用容忍因子和平均电负性力标差值作为钙钛矿稳定性的综合判据能很好说明钙钛矿稳定性。

A novel fluorescent probe, which is both pH-selective and pH-sensitive for the two extreme pH ranges of 1.8-3.4 and 11.6-13.3, was designed by assembling several electronegative atoms in the different positions of a highly conjugated molecule.

通过构建喹啉酮荧光体，将多个电负性氮原子设置于同一个共轭分子的不同电子环境中，制作了对极端pH变化具有灵敏响应的新型荧光探针。

A large number of bond-type complexes, as long as the hydrogen of the molecules covalently coupled to the molecular approach in an electronegative atom up, that constitutes a hydrogen bond, there are intramolecular hydrogen bonds and intermolecular hydrogen bonds of the points, will affect the formation of complex reaction carried out, such as in solution adding dioxa cyclohexane, or tetrahydrofuran, will reduce the alkylation reaction rate.

氢键型络合物为数众多，只要含氢的分子以共价键方式耦合到分子中一个电负性原子上去，即构成氢键，有分子内氢键和分子间氢键之分，络合物的形成将会影响反应的进行，如在溶液中加入二氧杂环己烷或四氢呋喃，都会降低烷基化反应速率。

The finite- difference method is used in calculations on electronegativity and hardness of 103 elements.

并用有限差分方法计算了这 103种元素的电负性和硬度。计算中考虑了相对论效应。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。