The paper proposes new separate ratio estimators for population mean using known skewness coefficient of auxiliaryvariable in stratified random sampling.
本文在分层随机抽样下通过使用辅助变量的偏斜系数提出了几个总体均值的估计。
2
It also calculates the recycling period of the auxiliary equipment for the variable flow operation.
同时分析了变流量运行时附加设备的回收期。
3
The auxiliary building adopts a variable refrigerant volume air conditioning system.