AutoCAD作为一款强大的工程绘图软件，已经成为工程人员工作中不可缺少的重要工具。AutoCAD的主要命令方式是命令行，几乎所有的操作都可以通过相应的键盘命令来完成。除此之外，Autodesk公司还提供了丰富的快捷菜单和工具栏以提高用户的工作效率。-AutoCAD drawing as a powerful engineering software, has become the engineer an important and indispensable work tool. AutoCAD is the primary command-line command mode, almost all of the operations are available through the appropriate keyboard command. In addition, Autodesk also offers a wealth of shortcut menu and toolbars to enhance user productivity.