“二阶抽样”的概念、定义、翻译、参考文献-科学参考

单词	二阶抽样
释义	二阶抽样 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。
随便看	Main Hall Of Baoyan Temple Main Hall of Chuzu Convent in Shaolin Temple Main Hall of Fengguo Temple Main Hall of Foguang Temple Main Hall of Guangrao Guandi Temple Main Hall of Hualin Temple main hall of hydropower station Main Hall of Kaishan Temple Main Hall of Nanchan Temple Main Hall of Qinglong Temple at Lushan Main Hall of the Hualin Temple Main Hall of the Nanchan Temple Main Hall of the Tianning Temple Main Hall of the Zhaoren Temple Main Hall of Tiantai Convent Main Hall of Wulong Temple Main Hall of Zhenguo Temple Main Hall of Zhenru Temple main haulage level Mainichi Shimbun Main Idea on Library Science main image main influential factors for fatigue strengh main involution main isomorphism

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