查询词典 electronegative

Bond'.'' consisting of a hydrogen atom between two electronegative atoms (e.g., oxygen or nitrogen) with one side be a covalent ''.

一种化学键：由两个负电原子及其间的氢原子组成，其中一边是共价键，另一边是离子键。

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。

The analytical results of Positron annihilation technology demonstrate that electronegative defect centers exist in the phosphor.

首次利用正电子湮灭分析手段，证实了SrAl〓O〓：Eu，Dy磷光体中存在带负电的缺陷中心。

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

Atom'.'' between two electronegative atoms (e.g., oxygen or nitrogen) with one side be a covalent bond and the other being an ionic bond.

负电'。''''。'原子'。''及其间的氢原子组成，其中一边是共价键，另一边是离子键。

With the increasing of length of hydrophobic chain, the cmc of CnE3SO3 decreases, the micelle aggregation number increases, the number and size of "electronegative cavity" also increase, the capability for calcium-tolerant has a relevant increasing.

随着疏水连的增长，他的CMC降低，胶束聚集数增大，负电空穴的数目和大小都有所增加，因此耐钙稳定性也有一个相应的增加。

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 other side, F is more electronegative than O, so Mn-F bond is more ionic in nature than Mn-O, and substitution of F for O will enhance the chemical stability of the spinels.

当然F／O间电负性的差别使得Mn-F比Mn-O具有更强的离子性，F取代O也增强了材料的化学稳定性。

The calculation results show that the Nd3+ and Th4+ would occupy the Pb sites near , and restrict the 420 nm absorption band by compensating the electronegative charges of .

计算结果表明， Nd3+和Th4+将占据PWO晶体中周围的Pb位，对的电荷补偿抑制了PWO晶体中420nm吸收带。

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 absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。