建立了主令速度分区控制思想，并提出了主令速度分解及单体设备速度补偿策略。

An idea of controlling the master speed by zones is adopted, and tactics of the master speed resolving and single device's compensation are presented.

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外存储设备已经成为计算机系统性能的瓶颈，用于提升外存储设备速度的技术层出不穷，而建模是研究这些技术效能的主要手段。

Peripheral storage devices have become the performance bottleneck of computer system now. A lot of technologies used to upgrade peripheral storage devices' speed have come forth.

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这是一个复杂的系统，数据被复制到多个中间设备，通常是为了在数百万人同时试图访问服务时加快文件访问速度。

It's a complex system wherein data is copied to multiple intermediate devices, usually to speed up access to files when millions of people are trying to access the service at the same time.

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Generally, the feature is that they are much faster because they have no moving parts.

一般来说，这些设备存取速度更快,因为它们没有移动部件。

哈佛公开课 - 计算机科学课程节选