[{"title":"( 5 个子文件 8.72MB ) 大连理工通信原理课件","children":[{"title":"第1讲 绪论.ppt <span style='color:#111;'> 1.47MB </span>","children":null,"spread":false},{"title":"第2讲随机信号分析.ppt <span style='color:#111;'> 1.03MB </span>","children":null,"spread":false},{"title":"第3讲 模拟信号的数字传输.ppt <span style='color:#111;'> 2.49MB </span>","children":null,"spread":false},{"title":"第5讲 模拟调制.ppt <span style='color:#111;'> 1.01MB </span>","children":null,"spread":false},{"title":"第4讲 数字基带传输系统.ppt <span style='color:#111;'> 2.71MB </span>","children":null,"spread":false}],"spread":true}]