短語詞組短語sampling g error 抽樣誤差sampling flow error 采樣流量誤差sampling survey error 抽樣誤差sampling mean error 抽樣平均誤差random sampling error 隨機(jī)抽樣誤差;抽樣誤差relative sampling error 相對(duì)抽樣誤差Value of sampling error 抽樣誤差值sampling error for the 為誤差項(xiàng) 返回 sampling error