每个应用程序设定类别都定义一组应用程序设定属性，其表示应用程序执行之间保存的资讯。

Each application Settings class defines a group of application Settings properties that represent information that persists between executions of the application.

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应用程式定义域的原则只能设定一次。

Policy can be set only once for an application domain.

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主应用程式在应用程式定义域上设定的安全性原则就称为应用程式定义域安全性原则。

The security policy that a host sets on an application domain is called an application-domain security policy.

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