英语单词“stratified random sample”的翻译、意思、用法、释义-英汉词典

单词	stratified random sample
释义	stratified random sample1.■分层随机样品
随便看	upturned UPU up until Upupidae upvaluation upvalue U.P.W.A. upward upward compatibility upward compatible upwardly mobile upward mobility upward of … upwards upward valuation up warp upwell upwelling upwhirl upwind upwind effect up with Up your ass Up yours up-yours