查询词典 Valence

The formation situation of the band for transition metallic carbonyl cluster compounds is analysed with the bond valence formula for atomic cluster compounds.

本文运用原子簇化合物键价计算公式，对过渡金属羰基簇合物成键情况进行了分析，利用金属键轨道数，价非键轨道数和金属配体成键轨道数计算簇合物价轨道总数。

House of benzene of raw material cooking does not fall high, the part arranges anhydride manufacturer to begin pair of oil benzene and hydrogenation benzene inquiry, jie is pressed with be being applied to cooking benzene manufacturer, however crude benzole goods tightens valence firm, bring about cooking benzene airborne possibility is inferior.

原料焦化苯居高不下，部分偏苯三酸酐厂家开始对石油苯及加氢苯询价，藉以对焦化苯厂家施压，然而粗苯货紧价坚，导致焦化苯空降可能性较低。

Beryllium has valence 2 in all its compounds, which are generally colourless and taste distinctly sweet.

铍在所有化合物中的原子价都是2，这些化合物通常都无色，有独特的甜味。

The inconsistency ofchanging trend of the breakdown potential with NDE implied that NDE of aluminum was probably caused by low valence Al+ chemical reaction in solution.

不同阴离子使铝的负差数效应系数变化趋势和孔蚀活化电位变化趋势的不一致性说明铝电极的负差数效应现象是中间产物的低价离子在溶液中的化学反应造成的。

This is a chemical bond that results from the sharing of valence electrons between atoms.

这是一种共用原子间的价电子而形成的化学键。

The valence electron structure of medium chrome cast iron matrix is set up and the effect of Si on medium-temperature phase transformation is analyzed by using empirical electron theory of solids and molecules.

此文建立了290Cr8Si2中铬铸铁基体的价电子结构，运用固体与分子经验电子理论分析了中铬铸铁中Si对铸铁中温相变的影响，分析和实验结果表明，290Cr8Si2中铬铸铁基体含C、Cr、Si的-γFe晶胞中，C原子与Si原子的结合力强于C原子与Cr原子的结合力，中铬铸铁中较高的含Si量降低了铸铁基体的含Cr量，进而降低了中铬铸铁的淬透性。

The ground state of Ag atom has a closed Ad shell and a single s valence electron, hence it could be seen as "alkali-like" metals.

基态银原子具有饱和的内层d电子4d~(10和1个价电子(5s~1)的电子构型，与碱金属壳层结构类似，因此被看作"类碱"金属。

Hydrogen always has valence 1, so other elements' valences equal the number of hydrogen atoms they combine with.

元素的特征价数是以该元素一个原子可结合的氢原子数或可从一化合物中置换出的氢原子数来表示。

The V2O5 fines is prepared by static decomposition from APV and the relations of the deamination, the valence of vanadium, and the content of major impurities such as S, Si, K, Na to the temperature and time are studied in this experiment.

在实验室条件下，通过APV静态热解制备了粉状五氧化二钒，研究了静态中温条件下氨的脱除、钒的价态变化，以及硫、硅、钾、钠等主要杂质在产物中的含量与温度及时间的关系。

Based on the average lattice and average atom models, effects of interstitial impurities on the valence electron structures and phase transformation of Ti-Al alloys are analyzed, and the degree of descension of bond energy, melting point and liquidus temperatures as affected by interstitial impurities are calculated by the bond energy formula of the EET.

应用固体与分子经验电子理论的平均晶胞和平均原子模型分析计算了间隙杂质对Ti-Al合金价电子结构和相变的影响。同时根据该理论的键能公式计算了间隙杂质影响下的键能、熔点和液相线的变化。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。