YD 5072-2005.Supervision Speeification of Telecommunications Conduit and Cable C...

行业标准2023.08.04

YD 5070-1998.Code for Acceptance of CHINANET Engineering.1总则1.0.1YD 5070是公用计算机互联...

行业标准2023.08.04

YD 5069-1998.The Engineertng Design Specfcation of Mobile Data Network.2术语和符号Mob...

行业标准2023.08.04

YD 5079-1999.Acceptance Specification of Equipment Installation Engineering for...

行业标准2023.08.04

YD 5078-1998.Specifcations on Lightning Protection for Power Supply System in En...

行业标准2023.08.04

YD 5077-1998.Accepting Specifications for SPC Exchange Installation Engineering....

行业标准2023.08.04

YD 5076-1998 .Planning Specifcations for SPC Exchange Installation Engineering.1...

行业标准2023.08.04

YD 5075-1998.Digital Cross-connect Equipment Engineering Desdgning Standard for...

行业标准2023.08.04

YD 5091-2000.Interim Provisions for Test ot Anti-seismic Performances of SDH Opt...

行业标准2023.08.04

YD 5084-1999.Interim Provisions for Test of Anti-seismic Performances o{ Digital...

行业标准2023.08.04