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讨论了包装纸盒 CAD系统中常用的尺寸标注形式及所用到的字符 ,用求点画线和图形变换的方法建立了直线、角度和圆弧尺寸标注以及常用字符的数学模型。
The commonly used dimensioning forms and the characters used in the packaging box CAD system are discussed. The mathematical models of line, angle and arc dimension markings and common characters are established by using the method of drawing lines and graphics transformation.