螺旋桨滑流流过的机翼面积比的英文

fraction of wing area lying in slipstream

• 螺旋桨:    screw propeller; p ...
• 滑:    slippery; smooth
• 流过:    flow past; travers ...
• 的:    4次方是 The fourth po ...
• 机翼:    wings of an aeropl ...
• 面积:    area
• 比:    2