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

单词	two-stage sampling
释义	two-stage sampling Encyclopedia 农学抽样调查释 two-stage sampling二阶抽样设总体由个初级单元组成，每个初级单元又由若干次级单元组成，在总体中按一定方法抽取若干初级单元，对每个被抽中的初级单元再抽取若干次级单元进行调查的方法。 Mathematics two-stage sampling二次抽样
随便看	average-case hardness average characteristic sensitivity average clock average coherence average complexity average complexity of computation average concentration method for gamma logging average consistency average content average cross-section average current average daily exposure average daily feed intake average daily reading exposure average daily vehicle kilometer averaged data average degree average degree of polymerization average density average departure average development speed average deviation average dispersion average distance average distortion

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