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1999年10月26日,国际空间站曙光舱上的推进装置工作了大约5秒钟,把空间站的运行轨道提高了1.5千米。它为什么要提高轨道呢?原来有一块火箭碎片正朝空间站飞
On 26 October 1999, the propulsion unit on the ISS Shuter cabin operated for about 5 seconds, raising the orbiting orbit to 1.5 km. Why does it raise the track? There was a rocket fragment that was flying toward the space station