The forces on a full-size wing are then deduced from these measurements . 作用在实际大小的机翼上的力,即可由这个测量中获得。
The aerodynamic forces on any control surface produce a moment about the hinge . 在任何操纵面上的空气动力均产生围绕其铰链轴的力矩。
If we were to put a force on the particle, then it would react against the force . 如果在这个粒子上施加一个力,那么它就会反作用于这个力。
The forces on an isolated tail are represented just like those on an isolated wing . 作用在单独尾翼上的力的表示方法正和单独机翼的情形一样。
The pressure force on small particles fluctuates from moment to moment in magnitude and direction . 在小的粒子上的压力,从一个时刻到另一个时刻,在大小和方向上都有起伏。
In many cases an overall drag coefficient is given so that the net force on the surface can be determined . 在许多情况下,总的拖曳系数是已知的,因而可以确定作用于表面上的净力值。
The resultant force on the loop is evidently zero, since the forces on opposite sides are equal and opposite . 这一回线所受的合力显然为零,因为作用在相对两边上的力是等值而反向的。
The victory of the royal air force on september 15 is seen now in retrospect to have marked its decisive turningpoint . 现在回忆往事可以看出,皇家空军9月15日的胜利标志着决定性的转折点。
To maintain a continuous current, we must in some way maintain a force on the mobile charges in a conductor . 为了在导体内维持恒电流,我们必须用某些方法,使导体内的可动电荷保持受到一个力。