Factory atmosphere, drone in a mine tunnel:
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Air compressor turn on, turn off
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Work, Generator, jamming, start
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The atmosphere of the factory, rattling
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Hydraulic machine up
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Canning machine
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Stitching machine
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Grind metal on a grinding machine in a
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Conveyor belt, Conveyor
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Mill for grinding grain, Brewing unit
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Forklift in motion
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Power station turbine
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Low frequency running engine
★★★★★