Automatic telephone switch:
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Mill for grinding grain, Brewing unit
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Vibrosieve at the factory
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Small centrifuge
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Forklift, off, on, standby
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Box making machine
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Notches, print imprinted in cardboard
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Automatic telephone switch
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Electric generator (hum)
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Work in a warehouse, general noise, loaders
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Jamming, Generator, work, start
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Crusher
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Working machine engine
★★★★★