单词	qr分解
释义	同正交-上三角矩阵分解--QR分解
随便看	negative and positive (-+) negative and positive [－＋] negative angle negative angle identity negative anomaly negative answer negative-appearing image negative area negative argument negative artesian head negative assembly negative association negative assortative mating negative attack speech negative attenuation negative attitude negative attitude change negative authorization terminal system negative authorization terminal system，nats negative availability negative axis negative azeotrope negative balance negative base number negative bath