main user interface meaning in English

主要用户界面

The main user interface to the engine is called horn , and can be invoked as follows
该引擎的主用户界面叫horn ，可以像下面这样来被激活：
They are the main user interface element and contain the controls that comprise the interface of the application
它们是主要的用户界面元素，包含组成应用程序界面的控件。
Once the midlet is running the main user interface should appear in your wtk device emulator , as shown in the figures below
运行了这个midlet运行后，在wtk设备模拟器上应该出现主用户界面，如下图所示。
This simulation software consists of following functions : the design of chemical equipment and chemical techniques , calculation , data management and so on . in this paper , we chiefly finished system analysis , main framework construct , data structure design , graphic edit and framework interaction functions and main user interfaces design
本论文主要完成了系统的需求分析，框架建立、数据结构设计、图形编辑、框架交互、主要界面设计等几部分工作，使软件实现了设备的选型与设计、工艺流程图编辑等主要功能。