[{"title":"( 2 个子文件 13.76MB ) 《矩阵分析与应用》张贤达 清华大学出版社","children":[{"title":"(张贤达).pdf <span style='color:#111;'> 14.42MB </span>","children":null,"spread":false},{"title":"README.md <span style='color:#111;'> 1.40KB </span>","children":null,"spread":false}],"spread":true}]