Thrust value is constant and thrust direction variable.
假定发动机推力大小为常值，方向可调。
The thrust value is constant and the thrust direction is variable.
发动机推力大小为常值，方向可调。
If thrust and drag do not equal each other, the airplane can not fly at a constant speed.
如果推力和阻力彼此不相等，飞机就不同能等速飞行。
If thrust and drag do not equal each other, the airplane can not fly at a constant speed.
如果推力和阻力彼此不相等，飞机就不同能等速飞行。
应用推荐