... random sampling without replacement ==> 不放回随机抽样,不重复随机抽样 random satellite ==> 随机卫星 random satellite system ==> 随机卫星系统 ...
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一件事实上不是任何人的错：2009年发生在一架长期废弃的俄罗斯军用航天器和一颗铱星商用通讯卫星之间的一次随机碰撞。
One wasn't really anyone's fault: a random collision in 2009 between a long-defunct Russian military spacecraft and an Iridium commercial communications satellite.
事实上，任何一枚卫星被摧毁都会随机性地产生数千个高速飞行的导弹；随之而来的任何一次撞击又会导致更高速运动的碎片。
Each destruction of a satellite creates, in effect, thousands of missiles zipping round randomly; each subsequent impact provides yet more high-speed debris.
本文讨论了ALOHA、SCPC-DA等卫星通信系统中用随机方式占用卫星公用信道的碰撞概率问题。
The collision probability of randomly occupying the satellite common channel on the satellite communications system of ALOHA, SCPC-DA etc.
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