中文说明：光传送网分层结构及网络节点接口特征信息_黄丽艳
English Description：
Layered structure of optical transport network and characteristic information of network node interface_ Huang Liyan
Layered structure of optical transport network and characteristic information of network node interf
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中文说明：光传送网分层结构及网络节点接口特征信息_黄丽艳
English Description：
Layered structure of optical transport network and characteristic information of network node interface_ Huang Liyan光传送网分层结构及网络节点接口特征信息_黄丽艳.pdf