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

单词	proportional stratified sampling
释义	人口学词汇手册 proportional stratified sampling 成比例分层抽样
随便看	overdye overdye overeating overedge over-employed economy over entry certificate over-entry certificate overestimate over-excitation overexcited overexpansion overexpansion overexpenditure overexpenditure overexploitation overexposure overexposure overexposure over exposure overexposure overextend over-extension overfall overfall overfall

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。