cluster sampling造句

1、Methods The study was performed by systematic and cluster sampling and questionnaire.
方法采用系统整群抽样的方法，以填写调查表的形式进行问卷调查。

2、DESIGN: a stratified random cluster sampling investigation.
设计：分层整群抽样调查。

3、Multistage stratified cluster sampling method was used for the sampling.
采用多阶段整群分层抽样方法。

4、Methods: To applied cluster sampling method interview all the village health workers.
方法：采取整群抽样，对安宁市村级卫生服务提供者进行调查。

5、DESIGN: Cluster sampling and stratified analysis.
设计：整群抽样，分层分析。

6、Methods: Stratified random cluster sampling method was used to determine the survey sample.
方法：以分层随机整群抽样的方法，确定调查样本。

7、Methods. The survey was conducted according to multi-stage stratified cluster sampling method.
方法：分阶段分层整群随机抽样调查。

8、DESIGN: Cluster sampling and cross-sectional investigation.
设计：整群抽样，横断面调查。

9、Methods Questionnaire and multistage stratified cluster sampling method were used for the survey.
方法进行问卷调查；采用多阶段整群分层抽样方法。

10、Method cluster sampling and cross sectional study.
方法整群抽样，横断面调查。

cluster sampling翻译