So a hypervisor (regardless of the type) is just a layered application that abstracts the machine hardware from its guests.
hypervisor（不管是什么类型）仅是一个从其来宾操作系统抽象机器硬件的分层应用程序。
2
In a typical layered architecture, the layer that provides for the platform virtualization is called the hypervisor (sometimes called the virtual machine monitor, or VMM).
在典型的分层架构中，提供平台虚拟化的层称为hypervisor(有时称为虚拟机管理程序或VMM)。
3
Applying warm extrusion technique instead of machine 'work to a conical body, the problem of double-layered metal formed in the process of extrusion has been solved.