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Method and device for determining a line or cable section of an alternating current high-voltage network with an earth fault
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Method for operating a mill-drying plant for a cyclone furnace
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Mercury relay
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Articulated pipe connection
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Process for producing a gas similar to town gas
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Device for grinding hard, lumpy material, especially coke
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Cyclone grouch
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Cyclone firing
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Cyclone firing
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Device for heating steam boilers equipped with riser and downpipes with external steam
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Cyclone firing
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Cyclone combustion and method of operating the same
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