分析认为，雷电击中大树产生的雷电反击和跨步电压是造成这起雷灾的主要原因。
According to the analysis, the back flashover and the step voltage formed when the lightning strikes a tree are the main causes of the disaster.
等电位联结对于降低跨步电压、接触电压和防止雷电反击是十分有效的措施。
The problems to be dealt with are also pointed out . Equipotential bonding is a very effective measure for reducing step voltage and touch voltage and preventing from counter-attack.
等电位联结对于降低跨步电压、接触电压和防止雷电反击是十分有效的措施。
The problems to be dealt with are also pointed out . Equipotential bonding is a very effective measure for reducing step voltage and touch voltage and preventing from counter-attack.
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