Using such twists and turns, birds are said to be able to spill air out of their wings and can slow down rapidly to reduce flight altitude.(See photo)
有专家称，使用这种"超级扭曲"的方式，鸟类能够让空气从翼下划过，并能迅速减速并降低高度。
The flight state variables are separated into fast and slow variables in terms of perturbation theory.
根据奇异摄动理论将受控变量分为快变量和慢变量，然后分别对内环和外环进行设计。
According to the time scale separation principle, the flight system is divided into two subsystems, a quick loop and a slow loop.
根据时标分离的原则，将机动飞机分为快慢不同的回路。
When the oxygen fuel ratio is too low, slow particle flight speed and insufficient melt are the main reasons for the degradation of the coating compactness and mechanical properties.
氧燃比较低，粒子飞行速率低和熔融不足是涂层致密性和力学性能下降的主要原因；
When the oxygen fuel ratio is too low, slow particle flight speed and insufficient melt are the main reasons for the degradation of the coating compactness and mechanical properties.
氧燃比较低，粒子飞行速率低和熔融不足是涂层致密性和力学性能下降的主要原因；
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