[{"title":"( 3 个子文件 3.31MB ) 设计技术资料介绍- 后开式叶轮化工泵.rar","children":[{"title":"设计技术资料介绍- 后开式叶轮化工泵","children":[{"title":"Durco MKIII SALES BULL.a.pdf <span style='color:#111;'> 2.81MB </span>","children":null,"spread":false},{"title":"勾月readme.txt <span style='color:#111;'> 57B </span>","children":null,"spread":false},{"title":"CHEMSTAR泵样本.pdf <span style='color:#111;'> 625.15KB </span>","children":null,"spread":false}],"spread":true}],"spread":true}]