“stratified sample”概念、定义、翻译-科学时代

单词	stratified sample
释义	社会学词汇手册 stratified sample 分层样本
随便看	Bayinnaung Bayle bay leaf bay leaf Bayle--Pierre bayleyite Bayley Scales of Infant Development Bayle，Pierre Baylis Baylis--Lilian Mary bay loading baymouth bay number Bay of Bengal Bay of Pigs（Incident） bay oil bay oil bayonet bayonet assault bayonet base bayonet cap bayonet charge bayonet disarming bayonet mount Bayonet-Neil-Concelman (BNC)

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。