非弹性〔碰撞〕现象 phenomenon inelastic
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实际上，安全的散列函数不应存在这种碰撞现象。
In fact, a secure hash function should not have this collision.
对SPH方法中的人为粘性和人为热流的作用作了数值考查。还提供了一个三维高速碰撞现象的算例。
As an example of the application, the results of numerical simulation of a 3 dimensional hypervelocity impact problem are given with some existing problems of SPH method.
文章首先针对发生在赤道上空的严格碰撞现象进行了研究， 提出了避免赤道碰撞的星座参数配置方法；
The collision events must be avoided in constellation design. A research on proper collide above equator is introduced at first.
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