...特征（郭生玉，民84）：(1)调查研究通常是以从母体抽取的样本为研究的对象，有时也被称为样本调查研究（sample survey research），因为调查研究通常涵盖的范围相当的广泛，如果要对母群内的所有个体都加以调查（普查 ..
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sample survey research
抽样调查研究
以上为机器翻译结果，长、整句建议使用 人工翻译 。
Among the most scientific and serious polls was the large-sample survey (844 respondents) by the Pew Research Center from Jan. 30 through Feb. 2.
CNN: By Ronald D. Elving, CQ Staff Writer
The survey was done by an outfit called Braun Research that polled a nationally representative sample of 1, 000 working Americans age 18 or older.
FORBES: How To Make Thousands Of Extra Dollars While at Work -- If You Can Bear It
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