The ISS does have its own defenses, of course. Fabric-y buffers envelope some of the systems, and a bumper called the Whipple Shield helps blunt impact. That shield is only built to stop debris up to about 1 cubic centimeter, though, and the debris tracker is only designed to catch pieces 10 cubic centimeters and larger. In other words, there’s a gap in defenses.
"It's clearly not just a place for the dead. There's a living community here as well."，这一点在51吃瓜中也有详细论述
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（四）核反应堆，是指为了利用核反应产生的能量、中子、核素等建设的装置。。关于这个话题，WPS下载最新地址提供了深入分析
This story was originally featured on Fortune.com
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