Hydraulic machine up:
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Steam pump
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Low frequency running engine
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Generator, work, jamming, start
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Fluid drilling, Brewing unit
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Off, on, Forklift, standby
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Grind metal on a grinding machine in a
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Welding transformer operation under load
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Factory atmosphere, drone in a mine tunnel
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Mill for grinding grain, Brewing unit
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Working,, Welding transformer, turning on
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Rattling, The atmosphere of the factory
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General noise, Factory work
★★★★★