有向群

Li and one of his lemmas toabbreviate the nonnormal Cayley digraph 〓 into the case when 〓 is a dicycle.When 〓 is a dicycle,we give the sufficient and necessary conditions for 〓 to benonnormal and the structure of the corresponding automorphism group Aut.

Li定义的一个图〓，其中N是Aut的一个非平凡极小正规子群，和他的一个引理，把对非正规Cayley有向图Γ的讨论简化到〓是一个有向圈的情况，进而决定了当〓为有向圈时，Γ非正规的充要条件和Aut的结构。

Let G be a finite group, and S a subset of G not containing theidentity element 1. The Cayley digraph Cay on G with respect to S is definedas a directed graph with vertex set G and edge set {|g∈G, s∈S}. IfS~(-1)=S, then Cay is undirected and in this case, we view two directededges and as an undirected edge {u, v}. Obviously, the right regularrepresentation R of G, the acting group of G by right multiplication, is asubgroup of the full automorphism group AutCay(G, S of Cay.

给定有限群G，设S是G的不含单位元1的子集，群G关于子集S的Cayley有向图Cay是一个以G顶点集合，而以｛|g∈G，s∈S｝为边集合的有向图，特别地，若S~(-1)=S，则X=Cay是无向的，此时我们把一条无向边｛u，v｝等同于两条有向边和，易见，群G的右正则表示R，即G在G上的右乘作用，为图Cay的全自同构群AutCay

Specific Closed User Group members can have additional capabilities that allow them to originate calls outside the group, and/or to receive

对指定的封闭用户群成员，可以允许它们有向群外进行呼叫和/或接收来自群外的呼入的附加功能。

I vividly recall a big workers demonstration going to Nagano Station in front of my house when I was six years old.

我现在还清楚记得，六岁那年，我家门前有一大群示威工人，向著长野车站浩浩荡荡进发的情况。

Then quite a group of boys and girls -- playmates of Tom's and Joe's -- came by, and stood looking over the paling fence and talking in reverent tones of how Tom did so-and-so the last time they saw him, and how Joe said this and that small trifle pregnant with awful prophecy, as they could easily see now!

后来，有一大群男孩和女孩――他们曾经是汤姆和乔的伙伴――走了过来，站在那里向栅栏那边看，用虔诚的语调讲述着汤姆曾经如何干过什么事情，以及他们最后一次见到汤姆的情形。还有乔怎样说了这样和那样的小事情。

Midway up the slope between the bridge and fort were the spectators -- a single company of infantry in line, at "parade rest," the butts of their rifles on the ground, the barrels inclining slightly backward against the right shoulder, the hands crossed upon the stock.

处于桥与要塞之间的这片斜坡中间有一群旁观者，一连列队的步兵，呈"分列式稍息"姿势，枪托抵地，枪管稍微向后倾斜倚在右肩上，双手交叉抱住枪身。

A subset of these participants had suspected elder self-neglect or abuse reported to social services agencies.

这些研究的参与者中有一个亚群被怀疑有向社会服务机构报告的自我忽略或伤害行为。

Thus given a positive integer N , by our algorithm we can find an abelian Cayley Digraph with degree 2 whose diameter is minimal.

因此， 对一个给定的正整数，用我们的算法可以找到一个直径最小的阿贝尔群上2度有向凯莱图。

It was as if she were not standing on the deck of the ship anymore but was instead standing in a jungle clearing, looking at a group of brown-skinned, half-naked people. The people beckoned for her to come to them.

她向神祈祷，圣灵的带领，她惊异地看到自己似乎不在游船上，她站在丛林里，前面有一群棕色肤色，半裸体的人，这群人朝她招手，请她过来。

In the following, the paper lists node flux balance equation group and loop pressure balance equation group, based on law of conservation of mass and law of conservation of energy, and the relation between flux and pressure elicits, using the law of branch ventilation resistance and the relation of fan performance.

本文根据水电站地下洞室群通风系统的特点，提出了进行节点、分支划分与网络图绘制及分支阻抗计算的原则和方法，利用图论的相关理论将通风系统转化成为点和有向线段表示表示的，并且各个分支影响空气流动的因素由分支的阻抗表示的水电站地下洞室群通风网络图。

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。