查询词典 sampling

Methods A cross-sectional study was conducted on 1 870 medical college students who were sampled by cluster sampling method.

采用整群抽样方法，对安徽医科大学1 870名大学生进行现况调查。

Methods:Baseline survey was done for 540 children aged 4~5 years with cluster sampling.

使用整群抽样的方法对4～5岁540名儿童进行基线调查后，对整个社区的儿童分完全干预和有限干预两组进行了心理干预，并调查干预1年后的效果。

To interview1483 residents of 15 years and above by the way of stratified and cluster sampling.

通过分层整群抽样访谈调查了黑水县15岁以上居民1483人。

Methods questionnaire survey of 3 500 college students by random cluster sampling.

采用整群抽样抽取3 500名学生，对调查对象进行疾病诊断及影响因素问卷调查。

Methods The stratified cluster sampling was used to research 395 college students of Huangshan college by questionnaires.

采用分层整群抽样方法对安徽黄山学院395名大学生进行网络行为问卷调查。

Methods: The survey were designed by stratified cluster sampling.

方法采取分层整群抽样的方法。

Methods Questionnaire survey was conducted with stratified cluster sampling.

方法采用分层整群抽样的方法，进行无记名问卷调查。

Methods:Random cluster sampling method was used.2 763 subjects were studied with a self-reported questionnaire.

采用整群随机抽样方法，对2763名学生通过自填问卷的方式进行了调查。

Methods With stratified cluster sampling method,1?

采取分层随机抽样方法，对沈阳市2所大学1？

Methods By cluster random sampling method,a total of 21 kindergarten children in Meizhou were taken.

方法采用整群随机抽样的方法，抽取梅州市21所幼儿园的全部在园儿童，采用自拟问卷和克氏行为量表进行调查和评定。

A carrier gas such as nitrogen is directed through line 20 and valve 22 to connect with line 26 and mix with the gas sample.

如氮气之类的载体通过管线20和阀22引入，与管线26相通，与气体样品混合。

But for the most part, knaves and parasites had the command of his fortune

然而支配他的家产的大多是恶棍和寄生虫。