Program Logic Controler (PLC) is applied in control system of cement production because of its credible performance, high ration of performance to price and simple and convenient maintenance.
可编程序控制器(PLC)其性能可靠、性价比高、维护简便，在水泥生产控制中得到了广泛的应用。
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Scientific and proper ration of spares is a significant problem because the amount of spares can not only affect equipment maintenance and overhaul but also its operational readiness.