短語詞組短語stalled airfoil 失速機翼airfoil blade 翼型葉片airfoil terminology 翼形術語tapered airfoil 漸縮翼形biconvex airfoil 雙凸翼形multisurface airfoil 復式翼形supersonic airfoil [航]超音速翼型blade airfoil 葉型inflective airfoil 型面沿徑向彎曲 返回 airfoil