“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	bonding bonding electron bonding orbital bonding pad bonding promoter bonding properties of wood-based panels bonding state bonding technology bonding technology/technique bonding types of organometallic compounds bond insurance bond issue bond length bond market bond moment Bond number bond orbital approximation bond order bond order potential bond-orientational order bond percolation bond percolation process bond polarizability bond pricing bond ratings

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