This paper introduces the application of SIEMENS S7-300 PLC in mill control.The design of hardware and software are given.The structure of control network of the system is also introduced.是什么意思_This paper introduces the application of SIEMENS S7-300 PLC in mill control.The design of hardware and software are given.The structure of control network of the system is also introduced.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句