| 释义 |
va·lence 英ˈveɪləns美ˈvelənsAHDvāʹləns 高ＳCOCA³⁶⁰⁰⁹BNC²²³⁰⁷iWeb²²⁵⁶⁰
基本英英搭配记法近义反义派生词例句Thesaurus例句
n.化化合价;语配价;免疫学效价;心理学抗体效价;某物结合、反映或作用于另一物的能力¹⁰⁰复数valences异体字valency名词复数vallences
元素和化合物
Noun:
biology a relative capacity to unite or react or interact as with antigens or a biological substratechemistry a property of atoms or radicals; their combining power given in terms of the number of hydrogen atoms or the equivalentvalence bond价键valence force价力active valence有效化合价chemical valence化合价,化学原子价…valence angle价角negative valence负原子价,负化合价…valence shell价电子层valence band价带free valence自由价absolute valence绝对价,最高价…primary valence舟valence state价态residual valence剩余价valence number价数coordination valence配价,配位价…valence crystal价键晶体valence electron价电子,传导电子…valence effect价效应valence linkage价键coordinate valence配位价
val-ence行动|状态⇒n.化化合价;语配价;免疫学效价;心理学抗体效价;某物结合|反映或作用于另一物的能力n.原子价;化学生物学价;化学生物学数价;化合价;化学价;原子价数;效价;瓦朗斯音译名近义词 valency化原子价
Pbivalencen.二价Psemivalence半价Psexavalence六价Pseptivalence七价Ptrivalencen.三价Pmaxivalence最高价Ptervalence三价三阶Punivalence一价单价Pquadrivalencen.四价Punequivalence不等价Pquinquevalencen.五价Pminivalence最低化合价Pequivalencen.同等等价等值Pelectrovalencen.电价键电价Pbioequivalencen.生物等效性Pcovalencen.共用电子对数共价Pquantivalence化合价原子价化合价Pinequivalence\\异\\不等效不等价不等式Pmultivalencen.多原子价多价有多种意义
名词100%
用作名词Lead in compounds hasvalence2 and 4;an oxide is the most widely used.铅化物的原子价有+2和+4价，其中铅氧化物密陀僧是最广为使用的。
It puts forward the importance of verbvalencein learning the second language.并指出了动词配价理论在第二语言学习中的重要性。
I do not claim to know much more about novels than the writing of them, but I cannot imagine one set in the breathing world which lacks any moralvalence.我从不敢声称我对小说的了解远远超过我所写的小说本身，但我不能想象一个人活在这个世界上可以不需要任何精神上的依托。noun.ability to react with or affect another
同义词 reactiveness,reactivityability,affectibility,capability,capacity,power,strength And, all he's done is leave the valence electrons associated.
他所做的全部是,考虑到了价电子的关系。163
And, it says, OK, center the element with the lowest average valence electron energy.
它说，好的,把具有最低平均价电子能的元素画在中心。163
And we do so by a quantity called the average valence electron energy.
我们可以通过,一个叫做平均价电子能的量来解决这一问题。163
CO Right, so you take the co here, and we take the valence here, and out of that comes covalent.
好了，然后我们看到，我们可以看到他的化合价，他们成共价键。163
For our step two, what we need is number of valence electrons.
我们的第二步，需要知道价电子的个数。163
OK, elements with low average valence electron energy, and here I'm saying below11 electron volts, these are good electron donors.
平均价电子能都较低的元素，我是指那些低于11电子伏的，这些是很好的电子给体。163
Place the non- bonding pairs on peripheral atoms first, which the higher average valence electron energy.
首先将孤对电子放在外围的原子，那儿具有较高的平均价电子能。163
So, hopefully, you remember what we mean by valence electrons versus core electrons.
希望大家还记得,价电子与芯电子的定义。163
So, using our simple valence bond theory, what we would expect is that we want to pair up any unpaired electrons in methane with unpaired electrons from hydrogen and form bonds.
利用简单的价电子成键理论，我们预计,要把所有甲烷中没有配对的电子,和氢原子中没有配对的电子配对来形成键。163
So, we can think about now how do we describe this bond in valence bond theory.
我们现在可以考虑,怎么在价电子成键理论中描述这个键。163
And to do this we're going to introduce valence bond theory, and the idea of hybridization of orbitals.
在这之前我们要引入价电子成键理论，和杂化轨道的概念。163
And the idea is that when you do these Lewis dot structures, we're representing electrons with dots, which we'll see in a minute, and each dot is going to represent a valence electron.
而当你遇到这些路易斯点结构时，我们会将电子用点来表示，我们马上就会看到，每个点都代表了一个价电子。163
And, at the other extreme, we have elements with very high value, elements with high average valence electron energy.
另外，在另一端，我们有原子序数较大的元素，这些元素有着较高的平均化合价和电子能。163
How many valence electrons do we have left?
我们还剩下多少个价电子？163
However, unlike the semiconductor silicon, graphene has no gap between its valence and conduction bands.
然而，与半导体硅不同，石墨烯的价带和导带之间没有带隙。 yeeyan
Hydrogen is a one- valence element.
氢是一价的元素。《新英汉大辞典》
If you want to understand whether compounds form or not look only at the valence shell.
如果你想理解化合物是否形成,而不仅仅只是看看价层。163
In an indirect- band- gap material like germanium, the momentum of the lowest- energy state is misaligned with that of the valence band yellow and black arrows.
在一个间接带隙材料，像锗元素，最低能级与价带绿色的动量差不同参见黄色和黑色的箭头。 yeeyan
In valence bond theory, the focus is on discussing the bonds, but it should look very familiar to you, because there's two types of bonds that we want to discuss here.
在价电子成键理论中，所关注的是讨论成键，但这对于你们来说应该很熟悉，因为这是我们要讨论的两种键。163
It means cooperative sharing of valence electrons.
这意味着价电子的合作共享。163
Our next step is thinking about valence electrons.
我们下一步要考虑的是价电子。163
So let's just prove that to ourselves and figure out the bond order just using valence electrons.
让我们证明一下这一点,来看看只用价电子算出键序。163
So let's think about methane using valence bond theory.
让我们用价电子成键理论来看一看甲烷。163
So we actually only need two electrons to fill up the valence shell of hydrogen, remember that's because all we need to fill up is the1 s.
我们其实只需要两个电子,就可以将氢的价壳层排满，要记得这是因为我们只需要排满，1， s，轨道。163
So we have seven valence electrons.
我们有七个价电子。163
So, what we do as our seventh step is then figure out if we have any extra valence electrons left at all.
那么，第七步要做的是看看,我们还有没有剩下的价电子。163
So, our second step, as we go through our Lewis structure rules, is to figure out how many valence electrons we have in our entire molecule.
那么，我们的第二步，按照路易斯结构的规则，应该是判断在整个分子中,包含多少个价电子。163
Then it says, count all the valence electrons.
然后它说，考虑所有的价电子。163
These have low average valence electron energies.
他们有较低的平均价电子能。163
We have to account for that in some way because we know that they don't have identical average valence electron energies.
我们需要从一些方面来解释一下,因为我们都知道,他们没有相同的,平均价电子能。163 |