This paper introduces a electrical and hydraulic control system in screw down device of plate mill.
介绍了应用在中厚板轧机压下装置上的电气及液压自动化控制系统。
The utility model belongs to a speed control device for automobiles, in particular to an automobile speed-down device.
本实用新型属于汽车的车速控制装置，尤其属于汽车减速装置。
This article has described the function of the screw-down device of the three roll pipe mill, meanwhile the control technology for the screw-down device adjustment has been analyzed as well.
介绍了三辊轧管机压下装置的功能，并对压下装置调整的控制技术进行了分析。
All of them are paved with blind paths and stone ramps. 500 main intersections are installed with sound devices to guide the blinds. 350 intersections are installed with green light count down device.
在城市主干道约500个红绿灯路口安装了盲人过街音响信号装置，350个路口安装了行人灯绿闪倒计时器。
All of them are paved with blind paths and stone ramps. 500 main intersections are installed with sound devices to guide the blinds. 350 intersections are installed with green light count down device.
在城市主干道约500个红绿灯路口安装了盲人过街音响信号装置，350个路口安装了行人灯绿闪倒计时器。
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