该系统将可以复制复杂的自然太空环境，并且模拟低地球同步轨道的环境。
It will be able to replicate complex natural space environments and simulate low-Earth and geosynchronous orbits.
太空护栏将通过探测中低地球轨道的小型目标提供持续的网络中心态势感知。
Space Fence will provide continuous, net-centric space situational awareness by detecting smaller objects in low and medium earth orbit.
2001年时，在低地球轨道上安置有九座太空站，运作的时间长短不一。
As of 2001, nine space stations have been placed in a low Earth orbit and occupied for varying lengths of time.
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