操作系统的虚拟内存子系统允许应用程序分配的内存超过系统上实际存在的内存量，不足的部分由磁盘上的临时存储组成。

The operating system's virtual memory subsystem allows applications to allocate more memory than actually exists on the system, with the shortage being made up by temporary storage on disk.

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这个部分将介绍虚拟内存子系统中的一些更改。

This section discusses the changes made in the virtual memory subsystem.

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最重要的子系统是：静态模型、变更管理、虚拟装配对象和事件处理。

The most important subsystems are: the Static Model, the Change Management, the Virtual Object to Assemble, and the Event Processing.

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