Steam pump:
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Car factory
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Off, on, standby, Forklift
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Air compressor, air blow
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Factory atmosphere, drone in a mine tunnel
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Welding transformer operation under load
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Automatic folder
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Factory work, general noise
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Glass bottles on a conveyor line, room noise
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Bottling plant
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Steam pump
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Stitching machine
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Machine engine gaining momentum
★★★★★