Air pressure:
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Truck Air Brakes
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Air is blown through a glass tube
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Inflating a mattress
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Suction action of air
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Balloon descent
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Mask breathing
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Air compressor operation
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Compressor discharges air, Construction
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Fighting the fire with blacksmith furs
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Air bleed, Air compressor, cylinder pressure
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Soccer ball
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Air is let through the regulator
★★★★★