Hydraulic pump:
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The atmosphere of the factory, rattling
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Turn off, Air compressor turn on
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Welding transformer operation under load
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Forklift raises, lowers forks
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Grind wood with a grinder, noise in
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Car factory
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Electric welding
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Circular knitting machine
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Robotic assembly line
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Automatic folder
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Mechanical lift
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Book press
★★★★★