Another way to define it is, virtualization allows the user to run multiple applications in an existing operatingsystem.
另一种定义方法是,虚拟化让用户可以在一个现有的操作系统中运行多个应用程序。
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The operatingsystem can allow execution of multiple programs so quickly that it is virtually unnoticeable to a human user, making it seem as all the programs are running at the same time.
Operatingsystem-level virtualization is a server virtualization method where the kernel of an operatingsystem allows for multiple isolated user-space instances.