Automatic telephone switch:
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Steam pump
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Forklift truck moving away
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Power Plant Water Pumps
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Electric industrial motor
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Letter press
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Spinning machine
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Grind metal on a grinding machine in a
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Hydraulic activator
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Print imprinted in cardboard, Notches
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Power station generator
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Mill for grinding grain, Brewing unit
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Welding transformer, working,, turning on
★★★★★