“multi-stage random sampling”的概念、定义、翻译、参考文献-科学参考

单词	multi-stage random sampling
释义	multi-stage random sampling Encyclopedia 农学分级随机抽样法释 multi-stage random sampling分级随机抽样法将总体看为不同级别大小的抽样单元组成，然后对不同级别的抽样单元分级进行随机抽样的方法。又称多级随机抽样法、多阶段随机抽样法、巢式随机抽样法。
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