In order to implement this algorithm, this paper designed a user-level thread scheduling application framework.

为了实现这一算法，本文设计了一种用户级的应用线程调度框架。

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Whenever a user-level thread makes a blocking system call, the kernel execution vehicle it is using will become blocked in the kernel.

当用户空间线程调用了一个阻塞的系统调用时，内核执行对象也会在内核阻塞。

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User level thread is the higher level user scheduling unit supported by kernel thread, it supports concurrent execution of user programs.

用户级线程是在核心线程的支持下建立的更高层次的用户调度单位，能较好地支持用户程序的并发执行。

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