GB/T 7253-2019标称电压高于1000V的架空线路绝缘子交流系统用瓷或玻璃绝缘子元件盘形悬式绝缘子元件的特性标准
英文:Insulators for overhead lines with a nominal voltage above 1 000V—Ceramic or glass insulator units for a.c.systems—Ch...
英文:Insulators for overhead lines with a nominal voltage above 1 000V—Ceramic or glass insulator units for a.c.systems—Ch...