This thread is very important because it is in charge of dispatching events to the appropriate user interface widgets, including drawing events.

主线程非常重要，因为它负责把事件分发给相应的用户界面widget——包括屏幕绘图事件。

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This system is made up of several parts: knowledge base, inference engine, database, user interface, explanation facility and drawing module and so on.

热带钢连轧精轧机组设计专家系统由知识库、推理机、数据库、人机接口、解释机制和绘图模块等部分组成。

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It includes the key desktop applications, such as a word processor, spreadsheet, presentation manager, and drawing program, with a user interface and feature set similar to other office suites.

内建诸如文书处理、电子表格、展示工具及绘图等等软件，具有与其它办公室软件包相类似的使用接口及功能。

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