阐述了PLC可编程逻辑控制系统在饲料生产中的作用与优势；
The effects and advantages of PLC system on feed processing are also discussed;
介绍了可编程序控制器（PLC）的功能和特点，着重阐述了具有强大逻辑、算术控制功能的PLC在小型货物提升机控制系统中的应用。
The characteristic of PLC is introduced and the application of PLC with mightiness logic and number function in hoist control system underground small cargo hoist is emphasized.
介绍了可编程序逻辑控制器（PLC）在输油泵站自动控制系统中的作用。
The paper introduces the function of PLC in the automatic control system of pumping station.
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