[{"title":"( 9 个子文件 4.57MB ) sdh 课件 南京邮电大学","children":[{"title":"第六章SDH网络单元设备(2009).ppt <span style='color:#111;'> 2.43MB </span>","children":null,"spread":false},{"title":"第五章同步复用和映射(2009下).ppt <span style='color:#111;'> 1.64MB </span>","children":null,"spread":false},{"title":"第五章同步复用和映射(2009中).ppt <span style='color:#111;'> 1.23MB </span>","children":null,"spread":false},{"title":"第九章SDH传输性能指标(2009).ppt <span style='color:#111;'> 488.50KB </span>","children":null,"spread":false},{"title":"第八章SDH线路系统与光接口(2009).ppt <span style='color:#111;'> 794.50KB </span>","children":null,"spread":false},{"title":"第四章SDH基本概念(2009).ppt <span style='color:#111;'> 1.75MB </span>","children":null,"spread":false},{"title":"第七章SDH网络结构与生存性(2009上).ppt <span style='color:#111;'> 1.30MB </span>","children":null,"spread":false},{"title":"第五章同步复用和映射(2009上).ppt <span style='color:#111;'> 638.00KB </span>","children":null,"spread":false},{"title":"第七章SDH网络结构与生存性(2009下).ppt <span style='color:#111;'> 1.04MB </span>","children":null,"spread":false}],"spread":true}]