| airfoil: | The cross-sectional shape or surface that aids in the generation of lift. A wing, a rudder, a fish fin, and the blades of a fan or a windmill are all examples of airfoils. | |
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| airfoil: | The cross-sectional shape or surface that aids in the generation of lift. A wing, a rudder, a fish fin, and the blades of a fan or a windmill are all examples of airfoils. | |
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