undirected graph短语⁹⁶⁶⁷⁷⁺⁶ 基本例句 无向图 A method to build dimensioning model of2 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。 cnki In this paper, a method to build geometric constraint model of2 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。 cnki