... 二段取样 two-stage sampling 三阶段取样 three-stage sampling 取样法 method of sampling; sample method; sampling method; sampling method ...
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three stage sampling 三步抽样 ; 三阶抽样
stratified three-stage sampling 分层三阶段抽样
stratified three-stage pps random sampling 分层三阶段pps随机抽样
three stage cluster sampling 三阶整群抽样
The distribution and quantity of Felis lynx population in the northeast have been found out by the three-stage sampling method.
我们利用三阶抽样法，查清了东北地区猞猁种群的分布及数量情况。
A balanced three-layer sample rotation pattern is presented in this paper to solve the problem of rotation for the quarterly surveys with three-stage sampling designs.
本文构造了一种平衡的三层次样本轮换模式，解决了三阶段抽样季度调查的三层次样本轮换问题。
The paper presents a typical self-weighting sample design for the stratified three-stage or over sampling.
本文提出了分层三阶段及以上抽样的自加权抽样设计方法。
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