Under population follow normal distribution hypothesis, designing combine median-range adaptive control charts with variable sampling interval, variable sample size and variable control limit .
在假设总体服从正态分布的条件下，设计了抽样区间，样本容量和控制限都变化的全变化参数的中位值-极差联合控制图。
Listing 2. display_func variable declaration, sample size incrementer.
清单2 . display_func变量声明、样例大小增量程序。
The sender tracks the packet loss status according to the algorithm-loss rate estimation based on variable frame size and switches two audio sample files in accordance with packet loss status.
传送端根据以变动框架长度为基础之 遗失率估算法，来估算目前网路上封包 遗失的状况，并以此作为切换高低音质档案的依据。
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