Head structure defects of 7738 umbrella-type tower are presented after snow damage. Improvement methods are introduced and check-up calculation of load is made.
经过雪害教训后，提出了7738伞形铁塔头部结构存在的缺陷，介绍了改进的方法，并进行有关载荷的校验计算。
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。
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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