LED点阵书写显示屏

[{"title":"（ 140 个子文件 1.2MB ） LED点阵书写显示屏","children":[{"title":"A题--光伏并网发电模拟装置.doc <span style='color:#111;'> 247.00KB </span>","children":null,"spread":false},{"title":"F题--数字幅频均衡的功率放大器.doc <span style='color:#111;'> 108.50KB </span>","children":null,"spread":false},{"title":"G题--低频功率放大器.doc <span style='color:#111;'> 64.00KB </span>","children":null,"spread":false},{"title":"E题--电能收集充电器.doc <span style='color:#111;'> 180.00KB </span>","children":null,"spread":false},{"title":"B题--声音导引系统.doc <span style='color:#111;'> 353.50KB </span>","children":null,"spread":false},{"title":"......","children":null,"spread":false},{"title":"<span style='color:steelblue;'>文件过多，未全部展示</span>","children":null,"spread":false}],"spread":true}]