扇形体形状似四分之一圆圈的机器零件或其他机械设备 A machine part or other mechanical device that is shaped like a quarter circle.
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 A part or surface, such as a wing, propeller blade, or rudder, whose shape and orientation control stability, direction, lift, thrust, or propulsion.
这茶壶把儿的形状真别扭。 The handle of this teapot has an awkward shape.