“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	mutual commutant mutual commutator mutual concealment of offenses among the kin mutual conductance mutual convertibility of yin-yang mutual correlation mutual coupling Mutual Defense Assistance Agreement between the Government of Pakistan and the Government of the United States of America Mutual Defense Treaty between Niger and Libya mutual diffusion mutual division mutual energy mutual energy of signed measure mutual entropy mutual exclusion mutual exclusion algorithm mutual exclusion problem mutual explanation mutual friction mutual fund theorem mutual generation between metal（lung）and water（kidney） mutual generation of five phases mutual impairment of yin and yang mutual impedance mutual independence

科学参考收录了854744条科技类词条，基本涵盖了常见科技类参考文献及英语词汇的翻译，是科学学习和研究的有利工具。