Friendly graphical user interface. In the system, menus, toolbar, status bar, dialogs and the like are designed, input of text and parametric graph are completed in the dialog, all operations are very simple and available.

• 友好的图形用户界面 在该系统中，设计了菜单、工具条、滚动条、状态栏和对话框等，文本的输入和图形参数化在对话框中进行，操作简单易行；