【摘要】 研究了一种新的参数化尺寸标注机理，提出了基于模式匹配及其推理的方法．该方法借助于ＡｕｔｏＣＡＤ的尺寸标注功能及其存储格式，将国家机械制图标准所规定的尺寸标注模式与其相匹配，在归纳ＡｕｔｏＣＡＤ 和国家标准的各种尺寸标注模式的基础上，设计了一个新的参数化尺寸标注系统，实现了智能化尺寸标注功能，使其能够准确地标注国标所规定的各种尺寸标注模式．更多还原

【Abstract】 A new approach to develop parameterized dimensioning system based on pattern matching and logic reasoning is presented. The patterns of dimensioning as dictated by the national standards for mechanical drawings are matched with related functions implemented in AutoCAD. As a result, a parameterized dimensioning system is established with intelligent dimensioning capabilities for generating all kinds of dimensions conforming to the national standards.更多还原