... umbilical 控制用的，操纵用的，地面缆线及管道 umbrella aerial 伞形天线 umbrella insulator 伞形绝缘子 ...
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The double-umbrella insulator has the advantages of improving the pollution-resistance performance of the insulator and increasing the creepage distance.
这种双伞绝缘子的优点是改善绝缘子的耐污秽性能，增加爬电距离。
The utility model provides an insulator with a step-shaped umbrella skirt, relating to the field of high-voltage insulator.
本实用新型一种伞裙为阶梯形的绝缘子，涉及高电压绝缘子领域。
The situation of pollution flashover in East China was analyzed and the three-umbrella-type insulator with good anti-fouling characteristic was recommended.
分析了华东地区的污闪问题的现状，推荐了使用具有良好防污特性的三伞型绝缘子作为一种防污对策的选择。
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