[{"title":"( 3 个子文件 1.28MB ) PCB元件封装图示(包含各种常用器件,超全)","children":[{"title":"PCB元件封装图示","children":[{"title":"Lead.pdf <span style='color:#111;'> 320.80KB </span>","children":null,"spread":false},{"title":"smd.pdf <span style='color:#111;'> 324.82KB </span>","children":null,"spread":false},{"title":"conn.pdf <span style='color:#111;'> 730.08KB </span>","children":null,"spread":false}],"spread":true}],"spread":true}]