基本解釋[數(shù)學]橢圓置信區(qū)域詞組短語短語joint elliptical confidence region [經(jīng)]聯(lián)合橢圓置信區(qū)域elliptical confidence region更多詞組專業(yè)釋義數(shù)學橢圓置信區(qū)域