[{"title":"( 3 个子文件 15.66MB ) 数学建模 姜启源 及答案和司守奎老师的两本书","children":[{"title":"[数学模型].姜启源.文字版.pdf <span style='color:#111;'> 6.35MB </span>","children":null,"spread":false},{"title":"数学建模算法与程序 司守奎.pdf <span style='color:#111;'> 6.29MB </span>","children":null,"spread":false},{"title":"数学建模 姜启源 习题答案.pdf <span style='color:#111;'> 5.32MB </span>","children":null,"spread":false}],"spread":true}]