在下面的内容中，我们将更深入地探讨模型中每个组件的功能与特性。

In the following sections, you will explore in more depth the functions and characteristics of each component of the model.

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其他组件模型中有很多 SCA V1.0 中所没有的特性和功能（例如，持久性机制、线程语义等等）。

There are many more features and functions (for example, persistence mechanisms, threading semantics, and so on) that are present in other component models but which are not present in SCA V1.0.

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但是，GWT - Ext另外支持一些MyGWT中没有的组件跟特性，比如DatePickers、显性表单和验证功能、以及树型结构中的drag - and - drop。

However, GWT-Ext supports several components and features not available in MyGWT, such as DatePickers, explicit form and validation functionality, and drag-and-drop support in trees.

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