请输入您要查询的字词：
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
three gorges dam project
Three Gorges Hydro-Junction
Three Gorges ship lift
Three Gorges shiplock
Three Gorges Shiplock of the Yangtze River
three grade classifications of Chinese medicinals
three grade reagent
three grades of human nature
three-grades training system
Three Grand Festivals
Three Great Poets of the Jiangzuo Area
three-group
three hall film
three-halves power law
Three Heroes and Five Gallants
Three Heroes in Troubled Times
three-high cross-rolling mill
three-high multi-stand pipe mill
three-high shape mill
three high vertical mill
Three Hills and Five Gardens
three hindrances
three-hour geomagnetic planetary index
Three Huan of the State Lu
three humors theory
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。
Copyright © 2000-2023 Sciref.net All Rights Reserved
京ICP备2021023879号
更新时间：2026/7/2 22:28:32