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词汇	identity matrix
释义	identity matrixn.Mathematics（名词）【数学】Clarinda/Academy Artworks A square matrix with numeral 1's along the diagonal from upper left to lower right and 0's in all other positions.单位矩阵：以数字1作为从左上角到右下角对角线，以0放于其它位置的矩阵
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