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.
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在河北，统一的要素市场加快形成，要素资源配置效率稳步提升。
直到2012年習近平上台，張又俠出任解放軍總裝備部部長，兩人才真正意義上共事。