multistage sampling [统计] 多级抽样 ; 多阶抽样 ; 多段取样法 ; 级抽样
multistage sampling scheme 多级摄影取样图
multistage stratified random sampling [统计] 多级分层随机抽样
stratified multistage sampling 分层多级抽样
multistage data sampling 多阶段数据取样
multistage mixed sampling 多级混合抽样
aerial photo multistage sampling 航空像片多阶抽样法
We randomly selected 806 children under 6 years of age from 45 primary anganwadi (childcare) centres in Chandigarh, Punjab, India, that were chosen through multistage stratified random sampling.
在印度旁遮普省昌迪加尔的45所托儿所(anganwadi)中心采用多级分层随机取样法选择了806名6岁以下儿童。
Methods a questionnaire was conducted among target population by multistage sampling.
方法采取多阶段抽样，对目标人群进行询问式问卷调查。
Multistage stratified cluster sampling method was used for the sampling.
采用多阶段整群分层抽样方法。
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