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Pipeline sanding device
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Welding quality control method
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Device for displaying rail flaw detector
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System for controlling train movement
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Station device for controlling train movement
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Device for automatic traffic control
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Train control system
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System for controlling operations of yardmaster via radio channel at railway station
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System for control of shunting operations at railway station via radio link
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System for control of distance between successive trains based on digital radio communication
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Unit for retention of rolling stock at station tracks
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Method of arc welding rolled centres of locomotive wheels of medium carbon steel
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Method of creating impervious screen in soil
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