[{"title":"( 2 个子文件 2.68MB ) 通信工程专业综合实验_循环码实验(附代码+实验报告)_北京交通大学","children":[{"title":"循环码.zip <span style='color:#111;'> 1.03MB </span>","children":null,"spread":false},{"title":"循环码实验报告1.pdf <span style='color:#111;'> 2.40MB </span>","children":null,"spread":false}],"spread":true}]