Home / Standards / GB/T 9771.4-2008 GB/T 9771.4-2008 Abolished Single-mode optical fibres for telecommunication - Part 4: Characteristics of a dispersion-shifted single-mode optical fibre 通信用单模光纤 第4部分:色散位移单模光纤特性 Standard Type GBT ICS 33.180.10 CCS M33 Status 废止 Issue Date 2008-10-07 Implementation 2009-04-01 Responsible Dept 工业和信息化部(通信) Drafting Unit 工业和信息化部(通信)