Power station turbine:
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Machine engine gaining momentum
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Small centrifuge
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Postal sorting line
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Milling machine
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Turning on, Welding transformer, working,
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Laser welding
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Low frequency running engine
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Mill for grinding grain, Brewing unit
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Glass bottles on a conveyor line, room noise
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Lowers forks, Forklift raises
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Grind metal on a grinding machine in a
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Circular knitting machine
★★★★★