Electric industrial motor:
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On, Forklift, standby, off
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Machine engine gaining momentum
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Hydraulic down machine
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Run, shutdown, start, Compressor
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Robotic assembly line
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Hammer knocking, welding, Car factory
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Forklift truck moving away
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Hydraulic pump
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Milling machine
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Vibrosieve at the factory
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Grind metal on a grinding machine in a
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Electric generator (hum)
★★★★★