[{"title":"( 170 个子文件 25.75MB ) 信号与系统PPT","children":[{"title":"§3.11 抽样定理.ppt <span style='color:#111;'> 322.50KB </span>","children":null,"spread":false},{"title":"§3.10 抽样信号的傅里叶变换.ppt <span style='color:#111;'> 500.00KB </span>","children":null,"spread":false},{"title":"demo3-9-1.swf <span style='color:#111;'> 55.69KB </span>","children":null,"spread":false},{"title":"§5.1.系统函数H(jw).ppt <span style='color:#111;'> 998.50KB </span>","children":null,"spread":false},{"title":"§5.4 理想低通滤波器.ppt <span style='color:#111;'> 643.50KB </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}]