基本解釋[數學]模的直和英漢例句雙語例句When a direct sum of lifting modules is lifting is studied here.研究了提升模的任意直和在什么條件下仍是提升模。direct sum of modules更多例句詞組短語短語external direct sum of modules 模的外直和direct sum of modules更多詞組專業(yè)釋義數學模的直和