A part or surface, such as a wing, propeller blade, or rudder, whose shape and orientation control stability, direction, lift, thrust, or propulsion.

 
  • 翼剖面; 机翼; 翼面一个部件或平面,如机翼、螺旋桨叶、方向舵等,其形状或方位控制稳定性、方向、抬升、冲击或驱动
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