YD 5091-2005.Specification for Seismic Test of Optical Transmissions Equipment. 1总则 1.0.1为贯彻执行“中华人民共...
YD通讯标准
YD通讯标准
YD通讯标准
YD 5091-2000 SDH 光通信设备抗地震性能检测暂行规定
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