Computing the area of a planar graphs is valuable in engineering.
平面图形面积的计算具有较高的工程价值。
In this paper, we give some group chromatic of simple planar graphs.
在本文中，我们给出了一些简单平面图的群染色数。
It is known that the problem is APX-hard for general graphs and NP-hard for planar graphs.
此问题在一般图下是APX困难问题，在平面图下是NP困难问题。
Finally, the planar graphs of the traveling wave equation are simulated by using mathematical software MAPLE.
最后用数学软件Maple对行波方程进行数值模拟，得到纽结波的平面模拟图。
Secondly, we investigate the list coloring of planar graphs, and give a su? Cientcondition for a planar graph being 3-choosable.
其次，文章研究了平面图的列表着色问题，给出了平面图3 -可选的一个充分条件。
Pattern match search oriented to planar graphs is widely used in biological networks, social networks, fingerprint identification and image segmentation.
平面图的模式匹配查询可广泛应用于生物网络、社会网络、指纹识别和图像分割等。
In this paper, four types of graph coloring are discussed: dynamic coloring, incidence coloring, entire coloring and edge - face coloring of planar graphs.
本文讨论了若干图类的四种不同的着色问题：动态着色、关联着色、平面图的完备着色和边面着色。
In this paper we prove that the problem is polynomial solvable on several special classes of graphs, such as outerplanar graphs, series-parallel graphs and Eulerian planar graphs.
主要考虑外平面图，系列平行图和平面欧拉图这三类特殊的平面图。
Some upper bounds of the edge number for two class planar graphs are given. Some sufficient conditions for a planar graph to be class 1 are obtained through these bounds of edge number.
给出了平面图为第一类图的边数的一些上界，并给出了平面图为第一类图的一些充分条件。
In this paper, we investigate star color criticality of graphs and its relationship with color criticality by providing two types of planar graphs which are star color critical but not color critical.
本文对图的星临界性及其与图的临界性之间的关系进行研究，给出了两类星临界但非临界的平面图。
Based on this, the generic procedure of modeling planar multibody mechanical systems by bond graphs and its dynamic principle are described.
以此为基础阐述了建立平面多体机械系统键合图模型的一般方法及其动力学原理。
In the first chapter, we discuss the construction and the recognition of planar 1-cycle resonant graphs.
在第一章中我们研究了平面1 -圈共振图的构造和识别。
The general procedure to model planar linkage in non-inertial coordinate system by bond graphs is provided.
给出非惯性系平面连杆机构键合图模型的建立方法。
Based on this, the generic procedure of modeling planar multi body mechanical systems by bond graphs and its dynamic principle are described.
以此为基础阐述了建立非惯性系平面多体机械系统键合图模型的一般方法及其动力学原理。
Based on this, the generic procedure of modeling planar multi body mechanical systems by bond graphs and its dynamic principle are described.
以此为基础阐述了建立非惯性系平面多体机械系统键合图模型的一般方法及其动力学原理。
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