“cluster sampling”的概念、定义、翻译、参考文献-科学参考

单词	cluster sampling
释义	cluster sampling 分群抽样法整群抽样成串采样成群抽样密集样本分组取样集中采样
随便看	uncut edges uncut stone uncutting wiping towels uncut velvet undamaged undamaged recovery undamped undamped analytical balance undamped control undamped forced vibration undamped-free vibration undamped frequency undamped mode undamped motion undamped natural frequency of a mechanical system undamped oscillation undamped oscillator undamped pendulum undamped period undamped period of oscillation undamped vibration undamped wave undark undated securities undatergum

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