Machine engine gaining momentum:
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Car factory
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Postal sorting line
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Lowers forks, Forklift raises
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Forklift truck moving away
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Electric industrial motor
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Welding transformer operation under load
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Letter press
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Factory work, general noise
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Shutdown, Compressor, start, run
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Brewing unit, fluid drilling
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Turn off, Air compressor turn on
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Grind metal on a grinding machine in a
★★★★★