实际上，序列密码本质上就是一个伪随机生成器G，其输出的乱数序列和随机序列是计算不可分辨的；

In essence , stream cipher is such a pseudorandom generator that its chaos sequence of output and random sequence are computational indistinguishability ;

数学里，乱数也是一种模式。

In math , randomness is considered a pattern .

经不同乱数取样后所得到各个因子的权重，其标准差皆相当的小，显示因子之权重是相当稳定的。

The result shows that the standard deviation of a weight for each factor is small and means the weights are stable and reliable .

仿真结果初步证实，此种方法在移动计算环境中降低了网络信令流量，减少了乱序包数，改善了通信质量。

Simulation results confirm that applying distributed agency structure in mobile environment improves average throughput and lowers the amount of out-of-order TCP sequence numbers to some extent .