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又一大动作！...
source link: https://news.cnblogs.com/n/590913/
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视频地址：https://v.qq.com/x/page/h05631gmhjh.html科技狂人马斯克倡导的“超环高铁”已经在美国得到认可，正在进行可行性方案研究，超环高铁利用了低真空管道和磁悬浮技术，速度将接近飞机的1000公里时速。这种高铁不仅可以修...
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