Such a drawing of a planar graph G is called a planar embedding of G .

平面图G的这种平面上的画法称为图G的一个平面嵌入，平面图的平面嵌入称为平图。

Most of the two-dimensional models that manage topology are based on the planar graph theory.

大多数操作拓扑结构的二维模型都是基于平面理论的。

Construction operations must strict be abided by the planar graph approved by the firefighting department.

展台搭建单位应依据消防管理部门批准的平面图施工.

Construction operations must strict be abided by the planar graph approved by the firefighting department .

展台搭建单位应依据消防管理部门批准的平面图施工。

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。

The cube formed after cutting one part off the same planar graph in different ways of motion and its method of calculation are introduced.

介绍了同一平面图形按不同方式运动截取一部分形成的立方体的图形及计算方法。

Because of the existence of it, the information conveyed by planar graph design is more scientific and more accurate and expression methods are more colorful.

也正是由于它的存在，使平面图形设计的信息传达更加科学准确，表现手法更加丰富多彩。