用于在AutoCAD中绘制渐开线。 用法：运行AutoCAD并加载模型空间，加载并运行此宏，输入相关参数后点击按钮，然后模型空间就会出现图形。(Used to draw the involute in AutoCAD. Usage: run the AutoCAD and load the model space, load and run the macro, click the button after entering the relevant parameters, and then the model space will appear.)