[{"title":"( 2 个子文件 140KB ) 消失模铝铸件针孔形成机理研究.rar","children":[{"title":"消失模铝铸件针孔形成机理研究","children":[{"title":"勾月readme.txt <span style='color:#111;'> 57B </span>","children":null,"spread":false},{"title":"消失模铝铸件针孔形成机理研究.PDF <span style='color:#111;'> 157.57KB </span>","children":null,"spread":false}],"spread":true}],"spread":true}]