n. 副翼

[机] 补助翼, 副翼

[ noun ]
an airfoil that controls lateral motion
<noun.artifact>

Aileron \Ai"le*ron\ ([=a]"l[-e]*r[o^]n), n. [F., dim. of aile
wing.]
1. A half gable, as at the end of a penthouse or of the aisle
of a church.
[Webster 1913 Suppl.]

2. (A["e]ronautics) 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.
[Webster 1913 Suppl.]