The dynamics of the relative motion between two nearby spacecraft is investigated in a local orbital coordinate system. It' has been pointed out that an equilibrium state may exist in the motion;
采用本地轨道坐标系对两邻近飞船间相对运动动力学展开研究，指出在相对运动中也存在平衡状态；
Under a Lagrange coordinate system the trajectory of particles was tracked by the use of a random orbital method.
在拉格朗日坐标系下，用随机轨道法跟踪颗粒的轨迹。
The equation of satellite orbital motion was derived in the conventional terrestrial coordinate system.
推导了协议地球坐标系下的卫星运动方程。
The equation of satellite orbital motion was derived in the conventional terrestrial coordinate system.
推导了协议地球坐标系下的卫星运动方程。
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