通过对计算机分布式系统安全问题的介绍，提出了生存性的概念，并对其进行了分析，给出了生存性的定义。
Through introducing safety problem of the computer distributed system, the concept of survivability is put forward and analyzed, also the definition of survivability is given.
网络可生存性是网络安全研究的新方向，它突破了传统的网络安全的概念，从新的角度对网络安全问题进行研究。
As a new direction in network security, survivability is different from traditional network security, it gives a new way to research the network security.
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