free-flight angle

例句：

1. 1.The aircraft's free-flight angle is critical for its performance.
   飞机的自由飞行角度对其性能至关重要。
2. 2.The pilot adjusted the aircraft's free-flight angle to optimize fuel efficiency.
   飞行员调整了飞机的自由飞行角度，以优化燃油效率。
3. 3. The angle of the free-flight affects the aircraft's stability and control.
   自由飞行的角度影响飞机的稳定性和控制。