短語詞組短語double pipeline sampling 雙線采樣法Double Delta Sampling 雙重三角取樣double random sampling method 二重隨機抽樣法double regression sampling 雙重回歸抽樣correlation double -sampling 相關雙取樣double correlated sampling 相關雙采樣Double -sampling plan 兩次抽樣double percentage sampling 雙百分比抽樣 返回 double sampling