Truck Air Brakes:
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Rope torsion
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Construction, compressor discharges air
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Fighting the fire with blacksmith furs
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The release of, The work of oxygen equipment
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Air pressure
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Air compressor operation
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Suction action of air
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A stream of air breaks out of a metal pipe
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Wind tunnel ventilation
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Balloon inflating
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Air release with a loud whistling creak,
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Air flow
★★★★★
