Glass bottles on a conveyor line, room noise:
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Forklift raises, lowers forks
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Robotic assembly line
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Print imprinted in cardboard, Notches
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Power station turbine
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Spinning machine
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Low frequency running engine
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Hydraulic down machine
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Bottling plant
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Start, run, shutdown, Compressor
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Laser welding
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Automatic telephone switch
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Brewing unit, mill for grinding grain
★★★★★