JJG(铁道) 109-2006大质量比较仪

上一条：JB/T 7830-2006额定电压.1kV(U<下标m>=1.2kV)到10kV(U<下标m>=12kV)挤包绝缘电力电缆热收缩式直通接头Heat-shrinkable straight joints for extruded insulation power cables with rated voltages from 1kV(Um=1.2kV) up to 10kV(Um=12kV)

下一条：GB/T 1409-2006测量电气绝缘材料在工频、音频、高频(包括米波波长存内)下电容率和介质损耗因数的推荐方法Recommended methods for the determination of the permittivity and dielectric ddissipation fator of electrical insulating materials at power,audio and radio frequencies including meter wavelengths

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