ai·le·ron /ˈeləˌrɑn/
副翼
Ai·le·ron n.
1. A half gable, as at the end of a penthouse or of the aisle of a church.
2. Aëronautics A small plane or surface capable of being manipulated by the pilot of a flying machine to control lateral balance; a hinged wing tip; a lateral stabilizing or balancing plane.
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aileron
n : an airfoil that controls lateral motion