হাইড্রোফয়েল কি?

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Dec 19, 2012 12:53 AM 1 Answers
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AnswersBD Administrator Dec 19, 2012 02:10 AM
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A hydrofoil is a foil which operates in water. They are similar in appearance and purpose to airfoils.[1]

Hydrofoils can be artificial, such as the rudder or keel on a boat, the diving planes on a submarine, a surfboard fin, or occur naturally, as with fish fins, the flippers of aquatic mammals, the wings of swimming seabirds, or other creatures like the sand dollar.

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