YD 5060-1998.Drawings for Designing Anti-seismic Installation of Communication Equipment. 第一册终端复用通信设...
YD通讯标准
YD通讯标准
YD通讯标准
YD 5060-2010 通信设备安装抗震设计图集
YD 5060-2010.The Collection of Design Drawings for Seismic Installation of Telecommunication Equipme...