到目前为止，我们已经有了一个可作为整体进行测试的功能系统，至少有一组能组成特定组件的相关函数。

By now, you should have a functional system that can be tested as a whole, or at least as a set of related functions that comprise a specific component.

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尽管此处并没有列出拷贝和挂载初始 RAM 磁盘所涉及的所有函数，但是这足以为我们提供一个整体流程的粗略框架。

Not all functions that are involved in copying and mounting the initial RAM disk are shown here, but this gives you a rough overview of the overall flow.

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当应用程序深入使用这些时间函数时，更有效地使用这些与时间有关的函数，可以改进程序的整体性能。

When the application makes an intensive use of timing functions, a more efficient implementation of the timing routines can improve the overall performance of the program.

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so, remember we can break up the total wave function into the radial part and the angular part.

记住我们可以把整体波函数,分解成径向部分和角向部分。

麻省理工公开课 - 化学原理课程节选