mainframe

n.主机；大型计算机

These were the so-called mainframe machines. 它们被称为主机。

These terminals are connected to our mainframe computer. 这些终端设备都和我们的计算机主机相连。

It only uses the excess capacity of the mainframe. 它只使用了大型机上过剩的计算能力。

All of the information was then coded and entered into a mainframe computer. 所有这些信息接下来都被编成了代码然后输入到一个大型计算机里。