The meaning of WING FEATHER is one of the feathers of a bird's wing; especially : one of the flight feathers.
A wing-tip device to produce a significant reduction in drag. At the tip of the wing, there is a strong upflow, as the air spills over from the underside. The sails are angled so that they generate a forward component of force, or negative drag. Also known aswing feathersorwinglets. ...
(2001). Feather mites (Astigmata) avoid moult- ing wing feathers of passerine birds. Animal Behaviour, 62, 723-727.Jovani, R., and D. Serrano. 2001 . Feather mites (Astigmata) avoid moulting wing feathers of passerine birds. Animal Behavior 62: 723 – 727 ....
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Taking inspiration from bird feathers, Princeton engineers have found that adding rows of flaps to a remote-controlled aircraft's wings improves flight performance and helps prevent stalling, a condition that can jeopardize ... Oct 28, 2024 ...
六用所给词的适当形式填空。Parrots are birds. They have two 1.wings(wing). Their 2.feathers(feather)are beautiful.Snakes are reptiles. They have cold 3. _ blood _ (blood). There are scales on their skin. They are long and have no 4.legs (leg). Mother snakes5.lay((lay) eggs. ...
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, one of the anterior wings of beetles, and of some other insects, when thickened and used to protect the hind wings; an elytron; -- called also wing cover. Wing covert (Zo["o]l.), one of the small feathers covering the bases of the wing quills. See Covert, n., 2. Wing ...
Courting Bird Sings with Stridulating Wing Feathers. The article describes an acoustic signal that is produced by a mechanism unique among vertebrates. High-speed digital video recordings of the courtship dis... Bostwick,Kimberly,S. - 《Science》 被引量: 125发表: 2005年 Allometry of Bat Wings ...
From the alula, a small group of feathers at the front of the wing, to the primaries and secondaries, whichform the bulk of the wing surface, feathers are a marvel of engineering. They provide the necessary lift for birds to stay aloft, soar across great distances, and execute intricate ...