A bar drawn over two or more algebraic terms to indicate that they are to be treated as a single term.

 
  • 線(xiàn)括號在二個(gè)或二個(gè)以上的代數術(shù)語(yǔ)上所畫(huà)的線(xiàn)條以表示它們應當被當作一個(gè)單個(gè)術(shù)語(yǔ)
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