Automatic telephone switch:
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Hydraulic pump
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Bottling plant
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The atmosphere of the factory, rattling
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Hydraulic machine up
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Lowers forks, Forklift raises
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Car factory
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Welding transformer operation under load
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Industrial exhaust fan
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Print imprinted in cardboard, Notches
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Forklift approaching
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Air compressor turn on, turn off
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Drone in a mine tunnel, Factory atmosphere
★★★★★