electrical networks; concepts related to topology of electrical networks and theory of graphs 电网.与电网拓扑学和曲线图解原理有关的概念
the theory of graphs can be roughly partitioned into two branches : the areas of undirected graphs and directed graphs ( digraphs ) 图论大致可分为两个方向:无向图与有向图。
a new algorithm based on the minimum spanning tree theory of graph was proposed which improved the computation efficiency and reliability of previous methods . 2 对基于图的最小生成树理论的算法进行了改进,新算法在效率和可靠性方面都有所提高;2
based on these achievements, this paper mainly considers the stability of networks with neighbor condition . some results are obtained, therefore the stability theory of graphs are enriched in some extent 本文在前人工作的基础上,着重研究了邻域场合下图的稳定性,得到一些相关结果,在一定程度上丰富了已有图的稳定性理论。
based on the research and analysis of information of assembly of product, semantic of assembly is divided into four types in order that assembly mode is expressed briefly and definitely . assembly mode of product is described through graph of assembly semantic by the way of the theory of graph 在产品装配关系深入研究和分析的基础上,为使产品装配模型信息表达简洁、意义明确,将装配关系分成4种基本类别,采用图论方法对产品的装配模型进行图的表达。