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【摘 要】
：
Spacecrafts with the pure gravity environment are of great significance in precision navigation,gravity field measurement for celestial bodies,and basic physics
【机 构】
：
Institute of Aerospace and Material Engineering,School of Aerospace
【出 处】
：
应用数学和力学（英文版）
【发表日期】
：
2004年期
【基金项目】
：
the National Defence Preresearch Foundation of China;国家自然科学基金
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