alular

adj.pertaining to alulae

1. The alular feathers play a crucial role in the bird's ability to control its flight.
   翼上的小翅膀羽毛在鸟类控制飞行的能力中起着至关重要的作用。
2. Alular control surfaces are used in aircraft to provide stability during low-speed flight.
   飞行器中的翼上小翅膀控制面用于提供低速飞行时的稳定性。