短語詞組短語Stratified cluster random sampling 分層整群隨機抽樣stratified simple random sampling 分層簡單隨機抽樣;簡單隨機抽樣disproportionate stratified random sampling 異比分層隨機抽樣proportional stratified random sampling 分層隨機抽樣stratified random sampling method [統(tǒng)計]分層隨機抽樣法proportionate stratified random sampling 定比分層抽樣法multistage stratified random sampling [統(tǒng)計]多級分層隨機抽樣stratified random sampling surveys 分層隨機抽樣調查Using Stratified Random Sampling 采用分層隨機抽樣 返回 stratified random sampling