Generator, start, work, jamming:
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Spectrograph
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Working,, Welding transformer, turning on
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Stop, work, Lathe turning on
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Notches, print imprinted in cardboard
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Machine engine gaining momentum
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Canning machine
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Electric industrial motor
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Conveyor, conveyor belt
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Mechanical lift
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Stamping press
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General noise, Work in a warehouse, loaders
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Hydraulic pump
★★★★★