Valence

Valence的基本解释

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[地名] [法国] 瓦朗斯

相似词

valence

Valence所属的单词分类

City / 城市 [3852]

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与Valence相关的网络例句 [注：此内容来源于网络，仅供参考]

052 Describes and claims a body of polycrystalline dielectric ceramic material having a lead zirconate--lead titanate--lead stannate composition falling within the area A B C E F of the triaxial diagram 1d of the drawings accompanying this specification and containing at least one substitutional additive ingredient selected from the group consisting of elements having respective ionic radii sufficiently close to the ionic radius of one of the elements lead, tin, titanium, zirconium and oxygen to permit of substitution, and a valence state differing from that of said one element by less than three units, the aggregate quantity of additive ingredient amounting to from 0.1 to 5 percent of the replaced ion on an atom basis, each additive ingredient present in said material being in ionic form and substituting for a finite percentage of the ions of a particular one of the elements lead, tin, titanium, zirconium and oxygen with respect to which it conforms with regard to ionic radius and valence state, said additive ingredient replacing a quantity of said elements having in the aggregate an equal number of valence units.

参考译文：第 1012052 号专利说明书介绍一种含有锆酸铅，钛酸铅，锡酸铅的多晶陶瓷介质材料，其组成在说明书附图 ld 三元相图中处于 A B C E F 区域内，该组成至少还含有一种置换添加物，这种添加物从一组离子半径分别接近于铅，锡，钛，锆，氧的元素中选出，以利于互相置换，而与上述一种元素化合价之差应小于三价。该添加物的总量为被置换离子的 0.1%~5%克原子。上述材料中的每种添加物是以离子形式存在的，它以一定的百分数置换铅，锡，钛，锆，氧中的某一元素的离子。添加物在离子半径和价数上必须类似于上述任一元素，并且置换添加物的量与被置换的元素在总体上具有相等的化合价数。本句由两个简单句构成，一个主句，另一个是定语从句。

In addition, some modifications on several computational methods are also presented. Using LMTO method the electronic structure of several systems are studied, and some results are obtained. They are: The ideal Nb (100) surface has three surface states, the multi-layer relaxed surface has two surface states. The surface energy of the ideal surface is higher than that of the relaxed surface, that means that the multi-layer relaxed surface is more stable than the former one, which supports the LEED results. The mono-layer relaxed Ag (111) surface is the most stable one among several" stable surface models"presented by several researchers. The surface energy of Ag (111) surface is higher than that of surface Ag (001), which supports some experimental results such as different reaction rate at different surface orientations for the same material. The surafce states of Si (111) surface not only locate near the Fermi level, but also in the valence band, which agrees well with Cohen's conclusion. Si (111)-H is an effective model for analysing the surface states and H adsorbed on the back surface is a good method for improving the convincingness of the results obtained on thinner slab models. The surface stability depends on three different kinds of MoSi〓(001) surfaces, the surface with mono-layer Si is the most stable one, and the surface with Mo at the first layer is the most unstable one among them. These are consistant with the Kemoda's experimental results. The valence bands of clean or K adsorbed CdTe (111) surface agrees well with the synchrotron radiation studies. The surface of CdTe (111) consists of four kinds of surface models which show different surface electronic structures and different surface structure stabilities. The conclusion agrees well with Wu's experimental work. The different absorbed alkali metals on the CdTe (111) surface give different adsorption characteristics which have relations not only with the valence electrons, but also with the core ones of the alkali metals. The electonic structures of Si-C alloys are different from that of Si-Ge alloys, and the energy band gaps of Si-C alloys do not increase linearly with Carbon concentration, our conclusion supports Alexander's results, but conflicts with Soref's one.

现分述如下： LMTO方法及其应用方面：1）通过对Nb（100）表面电子态分析发现清洁理想表面有三个表面态，多层弛豫表面有两个表面态；表面能大小说明多层弛豫表面更稳定，支持了LEED结果。2）通过对采用不同方法获得的几种不同Ag（111）表面稳定结构的表面能计算分析，给出了单层弛豫表面为Ag（111）表面的最稳定结构；从Ag（111）单层弛豫表面和Ag（001）表面的表面能比较，发现了Ag（001）表面表面能要比Ag（111）小的，表明了同种物质不同表面取向将表现出不同物理、化学性质，这是与实验中得出的结论是吻合的，3）通过对Si（111）表面态分析，不仅发现了Si（111）表面不仅具有居于费米能级附近的悬挂键所对应的表面态，而且还有很多表面态位于价带能量范围内，与Cohen等结果一致，H饱和slab模型背表面相当于增加了slab层的厚度，是一有效的变相增加slab层厚的方法，弛豫表面较清洁理想表面价带谱们低能端的少许移动，预示着总能降低，说明弛豫表面较清洁理想表面稳定。4）MoSi〓具有三种表面，从费米能级上态密度值大小得到单层Si表面最稳定，Mo原子为表层原子的表面最不稳定，双层Si原子表面居中的结论，这与Kemoda等人实验结果是一致的。5）通过对CdTe（111）表面表面电子态、表面结构稳定性及表面H、碱金属吸附的电子结构系列研究，不仅得出了CdTe（111）清洁及碱金属K吸附价带谱与同步辐射光电子谱相吻合的结果，而且发现了CdTe（111）表面具有四类不同原子近邻特征，表现出四类不同的表面结构及电子结构特征：不同表面态分布、不同的表面结构稳定性（表层原子与次层原子成三键有一悬挂键的表面要比表层原子与次层原子成一键有三悬挂键稳定（与Wu等人实验结果一致））、不同的H吸附特性。

The valence state and solubility of selenium in paddy soils, the dissolution equilibria of selenium and the valence changes of selenate in soil solution, the influences of redox potential and pH value on valence changes of selenium are discussed theoretically. A characteristic pH-Eh relationship is derived.

从理论上讨论了土壤硒的价态及其溶解性，土壤溶液中不同形态的硒的溶解平衡与可能存在的 Se的变价反应，土壤溶液中硒的价态转换的影响因素，特别是氧化还原电位与pH对淹水土壤溶液中硒的价态变换的影响。

与Valence相关的网络解释 [注：此内容来源于网络，仅供参考]

valence electron：价电子

典型金属原子结构:最外层电子数很少,即价电子(valence electron)极易挣脱原子核的束缚而成为自 由电子(Free electron) ,形成电子云(electron cloud) ,金属中自由电子与金属正离子之间构成键合称 为金属键.

valence electron：原子价电子

valence band 价带 | valence electron 原子价电子 | valency 原子价

valence：价

化学当量亦可依据元素之"价"(Valence)下定义. 其定义为:在一化合物中,一元素之当量为元素之原子量除以在该化合物中元素之价数. 例如:钠型阳离子:为成本最低廉的树脂,不过会释出Na离子,使用时TDS会下降,

valence：原子价

研究者通常把情绪的强度和原子价(valence)作为描述情绪特征的两个维度. 这里"原子价"指情绪的性质或方向,例如,高兴属于接近性的、积极的情绪类型,而抑郁属于回避性的、消极的情绪类型. 研究者分别考查了成人、幼儿以及婴儿在安静、放松状态下的脑电活动,

valence：瓦朗斯

法国国营铁路公司提供从CDG前往多处法国火车站的列车服务,包括 昂热 (Angers)、 阿维尼翁、 波尔多、 勒芒 (Le Mans)、 里尔 (Lille)、 里昂、 马赛、 蒙彼利埃、 南特、 尼姆、 普瓦捷 (Poitiers)、 雷恩 (Rennes)、 图卢兹 (Toulouse)、 图尔、 瓦朗斯 (Valence)等.