单词：similar orbits
单词：similar orbits 相关文章
Broadcast: Jan 02 2003 China has announced it plans to launch its first manned spacecraft in the second half of this year to become only the third country to do so. The news comes as China's fourth un
VOA2003（上）-科技先知
Chaotic Orbits Could Cause Catastrophic Collision火星真的会撞地球? Isaac Newton said, I can calculate the motion of heavenly bodies, but not the madness of people. He meant that while people can be unpredictable, the planets are just the oppo
2017年Scientific American(四)月
Comet 彗星 Do you know what a comet is? 你知道彗星是什么吗？ A comet is an object in the solar system. 彗星是太阳系中的天体。 It travels around the sun like the planets. 它像其它行星一样绕着太阳转。 Then, why don'
与美国小学生一起学英文第11册
Orbit 轨道 Do you know what an orbit is? 你知道什么是轨道吗？ An orbit is the path of a planet when it moves around the sun. 轨道是行星围绕太阳运动的轨迹。 It is similar to a cycling track. 它类似于自行车赛道。 As
与美国小学生一起学英文第12册
天文学在我们听力讲座里面算是出现频率较高的话题了，在目前所有的176篇讲座里一共有14篇天文学类的文章，且都是比较有难度的，可以说，天文学类算是我们讲座里的一个重点也是难点了。
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It was while puzzling over this problem that Bohr was struck by a solution and dashed off his famous paper. Called On the Constitutions of Atoms and Molecules, the paper explained how electrons could keep from falling into the nucleus by suggesting t
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