OPS Optical Processing System 光学处理系统 OPS Optimal Stratification Sampling 最优分层抽样 OPSC Optical Protection Switching Controller 光学保护转换控制器 ..
基于100个网页-相关网页
最优分配分层随机抽样 Optimum allocation stratified randomized sampling survey
·2,447,543篇论文数据，部分数据来源于NoteExpress
包括分层抽样下样本轮换的估计量公式和最优样本轮换率的确定方法。再接着利用前面介绍的理论知识，结合上海市城镇住房空置率抽样调查数据进行实证分析。
Based on the theory and method introduced before, this paper applied the rotation models to compute the sample rotation rate of sampling survey on vacancy rate of households in Shanghai.
youdao
应用推荐
模块上移
模块下移
不移动