[{"title":"( 2 个子文件 220KB ) 纸浆泵泵轴强度的有限元分析.rar","children":[{"title":"纸浆泵泵轴强度的有限元分析","children":[{"title":"勾月readme.txt <span style='color:#111;'> 57B </span>","children":null,"spread":false},{"title":"纸浆泵泵轴强度的有限元分析.pdf <span style='color:#111;'> 223.99KB </span>","children":null,"spread":false}],"spread":true}],"spread":true}]