From the system structure and software organization, the application of hot standby PLC technology in the control system of Bac Steel Third Phase Raw Material Yard is also discusses in detail.

从系统结构、软件体系等方面详细论述了宝钢三期原料场控制系统中的PLC热备冗余技术的具体应用。

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With own working practice, the application of wireless communication in raw material yard stacker-reclaimer was introduced.

结合工作实践，介绍了无线电通讯在原料场堆取料机中的应用。

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This project can solve the problems of many hard maintenances and more expensive cost for the moving equipment of raw material yard.

无线电通讯在原料堆取料机中的应用解决了原料场移动设备现场维护工作量大、维护成本比较高的问题。

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"Before you had to hunt for things through friends or contacts, " Hernan Mayor explains, as he loads roofing material onto the back of his bike at The Wonder builders yard.

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