Air compressor turn on, turn off:
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Forklift, off, standby, on
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Lathe turning on, work, stop
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Forklift in motion
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Compressor, start, run, shutdown
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Postal sorting line
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Circular knitting machine
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Small centrifuge
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Factory atmosphere, drone in a mine tunnel
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Printing press
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Electric industrial motor
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Jamming, Generator, start, work
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Power station generator
★★★★★