“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	external heavy atom effect external hemorrhoids external identifier external iliac artery external iliac vein external inductance external informativity external injury external input external inspection of oil and gas pipeline external inspection of special equipment external institution external integument external intercostal muscle external interrupt externalities of cultural industries externality externality of forestry externality of grassland externalization externalizing behavioral problem external key external law external law of composition external lightning protection device

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