概述了超高速碰撞对空间飞行器的破坏效应，简述了防护超高速碰撞的薄板屏蔽方法。
Both the damage effectives of hypervelocity impact on spacecraft and the thin plate shield method for hypervelocity impact resisting are outlined.
最后，指出超高速磨削砂轮在超高速磨削中的地位，并指出努力方向。
Finally, the position of the ultrahigh speed wheels in ultrahigh speed grinding and our research direction in future are pointed out.
结合超高速磨削的特点，论述超高速c BN砂轮中磨料、结合剂、硬度、浓度、组织的一般选用原则。
Based on the characteristics of ultrahigh speed grinding, the general selection principle of abrasives, binders, hard - ness, concentration and structure of ultrahigh speed CBN wheels is discussed.
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