“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	dispersion-strengthened alloys made by powder metallurgy dispersion strengthened material dispersion strengthening dispersion system dispersion test dispersion tester dispersion theory dispersion velocity dispersity dispersity, dispersity measure dispersity measure dispersive dispersive atomic fluorescence spectrometer dispersive chromatography dispersive coefficient dispersive element dispersive equation dispersive flow dispersive index of optical substance dispersive long-wave equation dispersive medium dispersiveness dispersive operator dispersive optical bistability dispersive power

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