rubbing area

area是什么意思？？？？？？_百度知道 ... rotor-disc area 旋翼桨盘面积 rubbing area 摩擦面积 rudder area 方向舵面积 ...

直角三角形_馆档网 ... "擦摩,研磨"," rubbing" "擦摩面积"," rubbing area" "擦摩因素"," rubbing factor" ...