“cluster sampling”的概念、定义、翻译、参考文献-科学参考

　

单词	cluster sampling
释义	cluster sampling Encyclopedia 农学抽样调查释 cluster sampling整群抽样在总体中按一定方式抽取初级单元，调查每个被抽中的初级单元中所包含的全部次级单元的方法。又称集团抽样。理学抽样调查释 cluster sampling整群抽样将总体划分为若干有联系的基本单元所组成的集合（群），然后以群为抽样单元，从总体中随机抽取一部分群，对入选群内的所有单元进行调查的一种抽样方法。又称一阶段整群抽样。 Mathematics ＞数理统计＞抽样与统计过程控制＞释义 cluster sampling整群抽样 cluster sampling整群抽样^† Chemistry ＞分析化学＞化学计量学＞释义 cluster sampling分类抽样＞分析化学＞化学计量学＞释义 cluster sampling整群抽样
随便看	water quality water quality analysis water quality and sampling water quality assessment water quality assessment of transboundary water section water quality automatic monitoring system water quality buoy water quality detection water quality evaluation water quality forecasting water quality for mariculture water quality grade water quality index water quality investigation water quality management water quality model water quality monitoring water quality monitoring index water quality monitoring method water quality of lake water quality of reservoir water quality of river water quality of waterbody water quality of water supply water quality protection measures

　

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