However, you can use the accelerator table to define key combinations for commands that don't have a user-interface object associated with them.
不过，您可以使用快速键对应表，来为不具相关使用介面物件的命令定义组合键。
The main layers of the application are a database, a persistence framework, a database access object, and user interface (UI) controller and view layers.
应用程序的主要层是数据库、持久性框架、数据库访问对象和用户界面(UI)控制器及视图层。
A widget is a View object that serves as an interface for interaction with the user.
工具是为用户交互界面提供服务的视图对象。
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