YD 5084-2005.Specification for Seismic Test of Switching Equipment. 1总则 1.0.1 为贯彻执行《中华人民共和国防震减灾法》和地震...
YD通讯标准
YD通讯标准
YD通讯标准
YD 5084-1999 数字程控电话交换设备抗地震性能检测暂行规定
YD 5084-1999.Interim Provisions for Test of Anti-seismic Performances o{ Digital Program Control Swi...