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美国宇航局的怪异太空声音应该是你万圣节派对的播放列表
... on the protective shield on NASA's Stardust spacecraft was pelted by dust particles and **all rocks, as can be heard in this audio track. 您可以在SoundCloud上找到完整的播放列表。万圣节快乐！
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磁场(magnetic field)和磁通量(magnetic flux)的区别
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什么是烟囱检查？(a chimney inspection?)
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