短語詞組短語Stratified Systematic Unaligned Sampling 分層系統非均衡採樣Systematic Random Sampling 系統隨機抽樣;系統抽樣;抽樣法;等距抽樣systematic pps sampling design pps 系統抽樣設計systematic pps sampling pps 系統抽樣systematic c sampling 系統抽樣systematic descriptive sampling 系統描述性抽樣cluster systematic random sampling method 束系統隨機抽樣方法systematic sampling scheme [數]系統抽樣方案systematic sampling method 系統採樣法 返回 systematic sampling