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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。
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influenza viral pneumonia
influenza virus
influenza virus infection
influx
influxion
influx stability control
INFN
infobond
infochemicals
Info-communications Media Development Authority of Singapore
in focus
in-forest edible mushrooms
in-forest medicinal herbs
informal
informal argument
informal axiomatic method
informal axiomatics
Informal Collaboration System
informal education
informal evaluation
informal finance
informal group
informal incentive
informal induction
informal information exchange
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