“分层抽样”概念、定义、翻译-科学时代

单词	分层抽样
释义	市场营销词汇手册 stratified sampling 分层抽样
随便看	foam breaker foam catcher foam cell foam chamber foam cleaner foam-coated fabric foam concrete foam destroyer foam-dried milk foam drilling foam drive foam-drive process foam drying foam dust separator foam dust separator foam dust suppression foamed filament foamed plastic foamed plastic foamed plastic foamed plastics foamed polyurethane foamed rubber foamer foamer

科学时代收录了1160609条科普词条，基本涵盖了常见科普常识及英语词汇的翻译，是科学学习和研究的有利工具。

stratified sampling