所有这些装置都能够帮助操作者保持良好的飞行位置。
All of these devices can help the operator maintain a good flight position.
我们已经注意到，它关系到滚转刚度和飞机保持两个机翼在水平位置飞行的趋势。
We have already noted its relation to roll stiffness and to the tendency of airplanes to fly with wings level.
分析认为PPT是一种先进的小推力动力装置，特别适合于微小卫星的轨道转移、姿态控制、位置保持以及星座编队飞行。
It was showed that PPT was a kind of advanced propeller with small thrust, which was suitable to orbit transfer, attitude control, station keeping and formation flying for small and micro satellite.
而最小值边界变异既能有效地限制了粒子位置或速度的幅值，同时可以保持粒子的飞行方向。
The minimum boundary mutation can limit the scope of particles' position and velocity, as well as keep the direction of them.
摘要对任务星施加持续的控制加速度，使其在飞行过程中相对于目标卫星的空间位置保持不变，即实现任意位置悬停飞行。
Abstract: By implementing a continuous control acceleration, the relative position of a mission satellite to a target satellite can keep fixed during the mission.
对任务星施加持续的控制加速度，使其在飞行过程中相对于目标卫星的空间位置保持不变，即实现任意位置悬停飞行。
By implementing a continuous control acceleration, the relative position of a mission satellite to a target satellite can keep fixed during the mission.
对任务星施加持续的控制加速度，使其在飞行过程中相对于目标卫星的空间位置保持不变，即实现任意位置悬停飞行。
By implementing a continuous control acceleration, the relative position of a mission satellite to a target satellite can keep fixed during the mission.
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