CAD procedure of extruder screw was developed with Visual LISP based on AutoCAD2004, and dialog box of data input was compiled with DCL.

• 在AutoCAD2004平台上,用VisualLISP语言开发了挤出机螺杆的CAD程序,用对话框控制语言(DCL)编制了螺杆参数输入对话框。