本文论述了自对偶图和简单自对偶图的一些性质。
This paper discusses some properties of the Self-dual graph and simple self-dual graph.
阐明了平图中的H圈与对偶图顶点四着色的依存关系。
The interdependent relationship between the Hamiltonian cycle and 4-colouring of the planar graph in the dual have discussed.
给出自对偶图的充要条件，并利用此充要条件，能构造出所有自对偶图。
The paper gives the necessary and sufficient condition of self-dual graphs, all of self-dual graphs can be structured with this necessary and sufficient codition.
给出了外平面图的拟对偶图的定义，并利用拟对偶图的性质证明了外平面图的结构定理。
This paper presents a definition of imitative dual graph of outplane graphs, and proves the structural theorem on outplane graphs by using the nature of imitative dual graph of outplane graphs.
从算法流程图和序码分析两个方面进行外部调序，用码位倒置和对偶演化相结合进行内部调序。
By means of the dual evolution, the external and internal ordering technique for the Walsh transform (FWT) was introduced and four kinds of ordering analyzed respectively.
本文采用统一的方法分析直流直流变换器中的对偶电路，将电路的对偶分解为拓扑图的对偶和元件的对偶。
The unified approach is applied to analyze dual circuits in DC DC converters, i. e. , the duality of circuits is decomposed into the duality of topological graphs and the duality of elements.
提出一个建立在基尔霍夫定则及其对偶定则基础之上的线性电路解法，只需对网络图的结构进行分析，不需列写任何电路方程式。
A solution of linear circuit based on Kirchhoff"s rule and its dual rule is presented. By means of this solution, analysis are required to the structure of graph, no any circuit equations are needed."
提出一个建立在基尔霍夫定则及其对偶定则基础之上的线性电路解法，只需对网络图的结构进行分析，不需列写任何电路方程式。
A solution of linear circuit based on Kirchhoff"s rule and its dual rule is presented. By means of this solution, analysis are required to the structure of graph, no any circuit equations are needed."
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