【摘 要】
:
周期的轨道在一任意第二度和顺序一致地旋转的重力地被学习。我们在这个严肃领域里调查四个平衡点。我们看到那种靠近的关系在这些 equilibria 和存在的稳定性和他们的附近周
【机 构】
:
SchoolofAstronautics,DepartmentofAerospaceEngineering
【基金项目】
:
Acknowledgements Helpful suggestions that largely improved the paper were given by Dr. Martin Lara, from Spain, when he visited the University of Michigan, and by an anonymous referee. This work was p