然后，直到发生定时器中断且调度程序在内核态被激活，进程1才恢复在用户态下执行。

Process 1 then resumes execution in User Mode until a timer interrupt occurs, and the scheduler is activated in Kernel Mode.

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当产生缺页中断时执行的一组核心态程序，它与映象激活程序一起提供操作系统的存储管理功能。

A set of kernel mode procedures that executes as the result of a page fault. The pager and the image activator provide the operating system's memory management functions.

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