[{"title":"( 2 个子文件 375KB ) 数字信号处理--DDS原理及设计实现.rar","children":[{"title":"dds_sim.rar <span style='color:#111;'> 824B </span>","children":null,"spread":false},{"title":"DDS原理及设计实现.pdf <span style='color:#111;'> 417.64KB </span>","children":null,"spread":false}],"spread":true}]