multi-stage cluster random sampling

常见例句

双语例句

• RESEARCH METHODThe stratified multi-stage cluster random sampling method was used in the survey.
  研究方法本研究采用分层整群随机抽样方法进行抽样。
• Methods Stratified multi-stage cluster random sampling method was used to select 3000 participants from the residents who were above 18 years living in Cuiping district.
  方法：采用等比例多阶段整群随机抽样的方法抽取翠屏区18岁以上常住居民3000人进行询问调查、体格检查及血液生化指标的测定。
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