YD/T 901-2001.Optical Fiber Cables for Core Network - Loose Tube Stranding Type of Outdoor Optical F...
YD通讯标准
YD通讯标准
YD通讯标准
YD/T 901-2009 层绞式通信用室外光缆
YD/T 901-2009.Stranded loose tube optical fibre cables For Outdoor Application for Telecommunication...