alula
美[əl'jʊlə] 英[əl'jʊlə]
n. 小翼羽
英英释义
Noun- scalelike structure between the base of the wing and the halter of a two-winged fly
- tuft of small stiff feathers on the first digit of a bird's wing
例句
- The team also noted a hinged flap near the base of the wing, called an Alula, which is deployed at right angles to the wing, which may be being used as a air flow-control device. 这个小组还注意到，翼根附近铰接的副翼，被称为小翼的，对翼成直角配置，它可能被用来作为空气流量控制装置。
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