Rosat (DLR)A big German spacecraft has made an uncontrolled fall from the sky.
一架大型德国飞船失去控制，从天空中坠落下来。
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Rosat was an X-ray telescope mission and had a mirror system made of a reinforced carbon composite material.
伦琴卫星是一只X射线望远镜，同时拥有由加强型碳纤维复合材料制成的镜子系统。
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ROSAT, a German X-ray telescope built with British and American technology, has been orbiting the Earth since 1990 and has provided invaluable data on stars.