[{"title":"( 3 个子文件 129KB ) 数学建模_组装某产品有六道工序","children":[{"title":"数学建模","children":[{"title":"~$01617038-蔡东鸿.docx <span style='color:#111;'> 162B </span>","children":null,"spread":false},{"title":"数学建模.docx <span style='color:#111;'> 153.55KB </span>","children":null,"spread":false},{"title":"factory0-1.lg4 <span style='color:#111;'> 4.50KB </span>","children":null,"spread":false}],"spread":true}],"spread":true}]