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Newton's Cannonball ZhangZhihuiAAA 2024-08-05 16:26 阅读:7 评论:0 推荐:0 编辑   
Newton's law of universal gravitation ZhangZhihuiAAA 2024-08-05 15:51 阅读:7 评论:0 推荐:0 编辑   
 
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