...sampling : 分层系统抽样，分层等距抽样 method of stratified sampling : 分层抽样法，类型抽样法 stratified sampling method : 分层抽样法 ..
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stratified random sampling method [统计] 分层随机抽样法
method of stratified sampling [矿业] 分层取样法 ; 分层抽样法
stratified d sampling method 分层抽样法
stratified cluster sampling method 分层整群抽样方法
adopting stratified random sampling method 采用分层随机抽样方法
METHODS an investigation was made by cluster and stratified sampling method.
方法采用多阶段分层整群抽样方法入户调查。
Stratified sampling method was applied to investigate immunization status of ecdemic children and its affecting factors in Baoshan District.
方法采用分层抽样方法对本区外来流动儿童免疫接种现状及其影响因素进行流行病学调查。
Stratified sampling method, from a polytechnic school in Qingdao test samples were 850, 809 valid questionnaires were valid for the 95.18 percent response rate.
采取分层抽样法，从青岛某理工院校抽取被试850名，收归有效问卷809份，有效问卷归收率为95.18%。
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