有向图

Based on rooted connected directed graph both cyclic and acyclic, OIM can describe the relationship of a complex object and its component objects, as well as the links between HTML files in World-Wide-Web naturally.

它基于带根连通有向图，图中可出现环路，因而能自然地描述复杂对象与其成员对象间的引用关系和WWW上HTML文件间的链接关系。

The mixed graph model is the consequence of a series of precise vertex decomposition applied to the digraph representation of a floorplan.

混合图是对表示布局的有向图进行一系列精确的顶点分解而产生的。

A graph is directed a digraph if each edge links two nodes together only in one direction .

如果每条边线仅在一个反向上将两个结点连接起来，则该图为有向图。

If then the graph is a directed graph .

如果≠，则这个图是有向图。

This paper expresses the constrained relationship of parts in the planning files with the directed graph and generates disassembly path automatically by the graph theory so as to realize the course of virtual disassembly with interactive control on the EON simulative platform.

文章将拆卸工艺文件中零部件的约束关系表示为有向图，利用图论的方法自动生成拆卸序列，最后在虚拟仿真平台EON上实现具有交互控制功能的虚拟拆卸全过程。

Firstly, we give a necessary and sufficient condition for a nonnegative square matrix to be decomposed into a product of a finite number of irreducible nonnegative matrices in chapter 1. We prove it by using Frobenius normal form in combinational matrix theory and associated directed graph in graph theory. In addition, we can limit the number of factors to three, and construct every factor.

首先，在第一章中，我们给出了一个非负矩阵可以分解成有限多个不可约非负阵的乘积的充要条件，证明过程利用了组合矩阵论中的Frobenius标准型和图论中的伴随有向图，并且将乘积中的因子个数限制到三个，具体地构造出了分解式中的每个不可约非负阵。

A directed graph, or digraph G consists of a finite nonempty set of vertices V, and a finite set of edges E, where an edge is an ordered pair of vertices in V.

有向图，或图克组成的有限非空子集的顶点V和有限的一套边英，那里的优势是下令对顶点在五顶点也称为节点。

The former firstly establishes state graph of power system, and then, with the use of the adjacency matrix and path matrix of the directed graph, fast finds out the key transmission sections suffering greatly from the outages of overload lines through simple calculation of matrix.

前者根据实时网络拓扑结构和潮流分布状态，在对初始电力网络简化、分区的基础上，利用有向图的邻接矩阵与路径矩阵，通过简单的矩阵运算，快速识别出与过载线路相关的关键输电断面；后者直接利用系统各支路的阻抗，从图论算法的基本思想出发，搜索最易遭受大负荷转移的关键传输路径，从而将安全性分析目标从整个网络缩小到某些关键的输电线路。

In 2002, Bonnington, Conder and Morton gave the problem: Characterize those embedding digraphs which are upper-embeddable.

Bonnington，Conder和Morton在2002年给出了有向图嵌入亏格的基本性质，并提出了如下问题：如何刻划有向嵌入是上可嵌入的？

In second chapter, we go on some researches about the shortest cycles in digraphs and about C-H conjecture.

在第二章里，文章对有向图中最短的有向圈以及C-H猜想进行了一些探索。

Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".

歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车，和一双合并为一移交&整个lotta爱&。

This is Kate, and that's Erin.

这是凯特，那个是爱朗。