“purposive sampling”概念、定义、翻译-科学时代

单词	purposive sampling
释义	旅游词汇手册 purposive sampling 立意抽样，有目的抽样
随便看	midpoint service length requirement midpoint-to-midpoint differential mid-point voltage mid P-value midrange mid range mid range midrange missile mid-rank method Midrex process midrib midrib midrib midriff mid-rise building mid-roll advertising mid-score midseason midship midshipman midshipman midships mid-shunt mid-square method midstation

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。