A virtual machine is one operating system (OS) that is being managed by an underlying controlprogram allowing it to appear to be multiple operating systems.
虚拟机是一个由底层控制程序管理的操作系统(OS)，这让它看起来像多个操作系统。
2
Computer is a machine that accepts and processes data into information under the control of a stored program.
计算机是一种在存储程序的控制之下，接收数据，并把其处理成信息的机器。
3
This paper introduces the machine structure of controlled five-bar mechanism and its theory of control, and puts forward a plan that develops the program of the control system by VC base on PMAC.