A method to build dimensioning model of 2 dimensional drawing based on undirected graph is presented.
提出了一种基于图结构描述的二维图形尺寸标注模型的建立及存储方法。
In this paper, a method to build geometric constraint model of 2 dimensional drawing based on undirected graph is presented.
本文提出了一种基于图结构描述的二维图形几何约束模型的建立及存储方法。
In Chapter 2, some basic knowledge and rulers on mechanical drawing are reviewed, and the computer of two dimensional view features is introduced.
在第二章中，介绍了一些机械制图的基本知识及制图规则，并介绍了二维图形特征的概念。
In Chapter 2, some basic knowledge and rulers on mechanical drawing are reviewed, and the computer of two dimensional view features is introduced.
在第二章中，介绍了一些机械制图的基本知识及制图规则，并介绍了二维图形特征的概念。
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