Automatic telephone switch:
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Hammer knocking, welding, Car factory
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Hydraulic pump
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Stitching machine
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Generator, jamming, start, work
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Forklift in motion
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Noise in, Grind wood with a grinder
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Power Plant Water Pumps
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Grind metal on a grinding machine in a
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Lithographic press
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Compressor industry
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Drone in a mine tunnel, Factory atmosphere
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Power station turbine
★★★★★