Welding transformer, turning on, working, turning off:
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Factory atmosphere, drone in a mine tunnel
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Circular knitting machine
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Print imprinted in cardboard, Notches
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Glass bottles on a conveyor line, room noise
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Crusher
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Industrial exhaust fan
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Dry cleaning
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Mill for grinding grain, Brewing unit
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Compressor industry
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Power station turbine
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Spectrograph
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Conveyor belt, Conveyor
★★★★★