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 operating system detects a change to the last write-time only when the file is written to the disk.

操作系统检测改变过去写的时间只有当该文件被写入到磁盘。

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