首先，PC操作系统被设计为将用户从主机集中控制的专治统治中解放出来。
First, PC operating systems were designed to free computer users from the tyranny of centrally controlled mainframes.
卸料系统采用液压站集中控制，迅速可靠。
Unloading system adopts hydraulic station centralized control, the rapid and reliable.
分别说明了系统的探测器、区域控制器和集中控制器的设计，还有系统的通讯方式，软件的设计思想以及系统的探测算法。
And discuss the detector, local controller and remote controller of the system, the communication mode of the system, the thinking of software design and the arithmetic of the detector in detail.
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