In another words, you only need one VM template for each operating system — this saves time and disk space.

换言之，对于各种操作系统，您都只需要使用一个VM模板——这可以节省时间和磁盘空间。

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This overcomes the shortage of data waiting in DOS (Disk Operating system). The tests of real-time display system indicate feasibility and practicality of this research.

本文所研究的实时显示系统进行的试验，也表明了本研究的可行性与实用性。

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The reason that this process takes so long is that a computer's operating system must be loaded from its hard disk into its random-access memory (RAM) every time the machine is turned on.

这个过程花这么长时间的原因是，每当打开计算机时，计算机的操作系统必须从硬盘载入到随机存取存储器(RAM)。

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