“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	Wireless Music wireless network wireless networked control system wireless optical communication wireless personal area network wireless personal area network, WPAN wireless personal area network，WPAN wireless positioning wireless positioning technology wireless power transfer wireless power transfer Appliance sub technical committee wireless power transfer technology and equipment specialized committee wireless power transfer technology specialized committee wireless power transfer via coupled magnetic resonances wireless power transmission Wireless Power Transmission Technology Wireless Power Transmission Technology and Its Applications wireless protocol tester wireless sensing technology in civil engineering wireless sensor network wireless sensor network for field planting wireless sensor network for protected horticulture wireless sensor network location technology wireless sensor networks for circulation management wireless sensor network, WSN

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。