被抽取样本的时间和 and
随机抽取样本 [数] randomly drawing sample
样本抽取规则 sample selection rule
及随便抽取的样本 convenience sample
评审抽样量与样本抽取 Audit Sample Size & Selection
这3枚牙齿是从相同的数据信息中无规律的抽取样本数据所构成。
These three teeth were made using irregular data samples from the same information.
对于需要通过抽样调查获得数据的统计指标，简要讨论抽取样本和构造估计量的方案。
As for those statistical indicators needed to use sample survey to attain data this article discusses program of drawing sample and constructing estimator simply.
方法问卷法、跨文化比较法及随机抽样调查，按各村18岁至45岁人口比例抽取样本。
Methods Applying answering questionnaires, contrasting cross culture and getting the sample at random. Then we chose each village came from 18 to 45 year-old sample.
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