n.飞弧；击穿；闪络；跳火
The critical flashover current reduces with the decrease of air pressure. 临界闪络电流随着气压的降低明显减小。
The flashover voltage of iced insulators of transmission lines is affected by the electrical characteristic of ice. 冰的电气特性影响输电线路覆冰绝缘子闪络电压。
