Except for the transitional elements, valency electrons are in the outermost electron shell . 除去过渡元素外,价电子位于最外面的电子层。
2.
Each of the four valency electrons of the carbon atom is shared with one of a hydrogen atom . 碳原子的四个价电子都各与氢原子的一个价电子共用。
3.
Test method for valency state of the arsenic component of ammoniacal copper arsenate solutions 氨铜砷酸盐溶液砷化合物化合价状态测试方法
4.
Standard test method for valency state of the arsenic component of ammoniacal copper arsenate solutions 氨化砷酸铜溶液中砷组分价态的标准试验方法
5.
In the second part , using the affine geometries , we construct an infinite family x ( p , n ) of semisymmetric graphs of order 2pn and valency p , where p is prime and p > n > 3 第二部分我们从仿射几何构造了一个半对称图的无限族x ( p , n ) ,在这个无限族中图的阶为2p ~ n ,度数为p ,这里是p素数且p n 3 。
6.
On the basis of distinctions of verbal valency , verbs used within oracle inscriptions can be divided into the following four categories : zero - valent verbs , monovalent verbs , bivalent verbs and trivalent verbs 摘要甲骨文中的动词可以根据其配价的不同分成以下四类,即零价动词、一价动词、二价动词、三价动词。
7.
The graphic texture ( of a type line ) does not demand to be set in a specific style ; it demands the effect of its modification or the play of valencies among styles , the vagueness of the difference of its effects 用字体构成的文字行的图形特质不应用一种特定的风格来设定;而应对其修改完善而得到一种效果,或是在不同风格组合之间游戏,一种由不同的效果差别而产生的模棱两可。
8.
The results indicate that ( a ) before heat treatment , with the increasing of substrate temperatures , content of lower valency ( tij + ) decreases , the stoichiometric proportion of o / ti in all samples is about 2 ; the films have amorphous incompact columnar fiber structure , and with the increasing of substrate temperature , the size of columnar fiber increases ; the films have good hyalescence in visible range and great absorbability at the wavelength of 350nm ; optical constants of the films are calculated from the transmittance spectrums in visible range by mathematical analysis of the orders of interference , the results show that the refractive ind 研究结果表明, ( a )热处理前,随着基片温度的增加,薄膜中的低价氧化钛含量逐渐减少,化学计量比趋于o ti = 2 ;薄膜具有非晶态不致密的柱状纤维结构,柱状纤维的尺寸随基片温度的升高而增加;薄膜在可见光范围内透明,在波长为35onzn时严重吸收,利用干涉级次法分析了薄膜的光学常数,结果表明,薄膜的折射率随基片温度的升高而增加,根据计算结果得到了tioz薄膜在不同基片温度下的折射率色散曲线。
9.
This paper provides the functional equation and parametric expression of rooted near triangulations on the torus with the size and the valency of the root - face as two parameters , and gives an explicit formula for the number of rooted near triangulations of the root face valency one on the torus with the size as a parameter 本文提供了环面上带边数和根面次这两个参数的有根近三角剖分的函数方程及其参数表达式,并给出了根面次为1以边数为参数的有根近三角剖分地图的精确解
10.
This paper provides the functional equation of general rooted maps with the number of inner faces , the rooted face valency and the number of non - rooted vertices as parameters on the torus , and gives an explicit expression of the enumerating function of these maps with the number of inner faces and of non - rooted vertices , then the number of these maps with the size as a parameter whose asymptotic result had been obtained in [ 2 ] is obtained as a corollary 这篇文章给出了环面上以内面个数,根面次和非根节点个数为参数的一般有根地图的计数方程,导出了以内面个数和非根节点个数为参数的这类地图的计数方程的精确解.作为推论,推出了以边数为参数的这类地图的个数,其近似解在文献[ 2 ]中已讨论