英语词汇“principal diagonal”是什么意思，“principal diagonal”的读音、用法及例句翻译-烛光网

词汇	principal diagonal
释义	principal diagonaln.Mathematics（名词）【数学】 The diagonal in a square matrix that goes from the upper left corner to the lower right corner.主对角线：方阵中从左上方到右下方的对角线
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