(家具、栅栏等上的)板条,窄条,横档one of a series of thin flat pieces of wood, metal or plastic, used in furniture, fences, etc.
2.
前缘缝翼(机翼前缘的一部分,可使其上下移动来控制飞机的升降)a part of the wing of an aircraft, on the front of the wing, that can be moved up or down to control upward or downward movement