“stratified random sampling”概念、定义、翻译-科学时代

单词	stratified random sampling
释义	社会学词汇手册 stratified random sampling 分层随机抽样
随便看	identificational assimilation identification and authentication identification and authentication identification beacon identification beacon identification caption identification caption identification card identification card identification card identification card holder identification card standardization identification character identification circuit identification clause identification code identification code identification code identification code for commodity identification code for converter connections identification data identification data identification division identification form identification friend or foe

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。