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The Mysterious Island is a novel by Jules Veme.The book tells the adventures of five Americans on an unknown island in the South Pacific.Five prisoners of war decide to escape (逃跑)by a balloon (热气球).After flying in stormy weather for several days,they finally land on (降落于) a mysterious island.The following content is about their story on the balloon. 相似文献
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针对"嫦娥三号"软着陆最优降落位置及能量控制研究,使用积分化和图像二值化方法,构建主下降阶段动力学仿真模型和基于耗能最低的灵敏度分析模型等,运用Matlab7软件编程求解,得到"嫦娥三号"在着陆准备轨道近、远月点位置以及降落月面时的具体位置等结论。 相似文献
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