PLC and the related auxiliary equipment should according to form a whole easy with the industrial control system, easy to expand its function the principle to design.
plc及其有关的外围设备都应该按易于与工业控制系统形成一个整体，易于扩展其功能的原则而设计。
PLC and the related auxiliary equipment should according to form a whole easy with the industrial control system, easy to expand its function the principle to design.
plc及其有关的外围设备都应该按易于与工业控制系统形成一个整体，易于扩展其功能的原则而设计。
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