最后通过避雷针保护范围的计算，说明了在重要工程中采用提前放电式避雷针的重要意义。

Finally, based on calculating the protective range of lightning rod, the importance of using early streamer emission lightning rod in important project was explained.

youdao

最后通过避雷针保护范围的计算，说明了在重要工程中采用提前放电式避雷针的重要意义。

Finally, based on calculating the protective range of lightning rod, the importance of using early streamer emission lightning rod in important project was explained.

youdao