[{"title":"( 3 个子文件 6.32MB ) procast应力分析教程及参数设置,适用于初学者","children":[{"title":"stress设置","children":[{"title":"仿真参数详解参数.pdf <span style='color:#111;'> 383.05KB </span>","children":null,"spread":false},{"title":"stress-参数设置.mp4 <span style='color:#111;'> 7.86MB </span>","children":null,"spread":false},{"title":"应力分析教程.pdf <span style='color:#111;'> 522.15KB </span>","children":null,"spread":false}],"spread":true}],"spread":true}]