[{"title":"(2个子文件13.36MB)叶片泵设计手册完整版","children":[{"title":"叶片泵设计手册","children":[{"title":"叶片泵设计手册.pdf <span style='color:#111;'>14.01MB</span>","children":null,"spread":false},{"title":"readme.txt <span style='color:#111;'>33B</span>","children":null,"spread":false}],"spread":true}],"spread":true}]