在AutoCAD中标注符合国标的尺寸

在AutoCAD中标注公差时，有的用户用TEXT或DTEXT来注写上下偏差，或者用系统提供的方法注写公差时，如果有零偏差，则会出现上下偏差的个位数的零上下不对齐的现象。这样标注的尺寸不符合国标的规定。笔者利用系统提供的特殊符号解决了零偏差个位上下不对齐的问题。并且论述了如何在AutoCAD中设定系统参数使其按照机械制图国家标准的要求来标注尺寸，以及在AutoCAD中标注尺寸的基本方法、系统提供的特殊符号在尺寸标注中的其它运用。同时，比较了AutoCADRl4与AutoCAD2000两个版本在尺寸标注方面的异同与改进。

Dimensioning in AutoCAD According to the National Standard of Mechanical Drawing

When dimensioning the tolerance in AutoCAD, some users dimension the upper and lower diveation by using text or dtext command; While by the method that AutoCAD provides, the problem occurs that the first zero of the upper and lower deviation cant align. Therefore the dimensions drawing in this way cant conform with the National Standard. This article is centered on how to set the system parameters so as to dimension in AutoCAD according to the National Standard of Mechanical Drawing, and the basic method of dimensioning in AutoCAD, and the application of the serial symbols, meanwhile, it compares AutoCAD R14 with AutoCAD 2000. It also describes the improvement of AutoCAD 2000.