比如在雷雨过后，感到空气格外的清新，这就是因为空气中雷电造成的大量负离子产生的。

For example, the air is particularly fresh after thunder storm. The reason is because of more negative ions was produced by lightning.

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弹簧机设备在通电过程中要做好可靠的接地保护措施，比如接地保护可有效防护下雨打雷时雷电击中电器元件；

Spring machine equipment to make reliable grounding protection measures in power in the process, such as grounding protection and effectively protecting rain thunder lightning electrical components;

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