然而，如果鸟(或电工)意外地接触了与高压线相连接的通电的“地线”，它形成了一个电路。
But if a bird (or a power line worker) accidentally touches an electrical "ground" while in contact with the high-voltage wire, she completes an electrical circuit.
最后提出了用户电路板中印制板电源、地线布线设计时应注意的问题。
Finally, it indicates the problems to which one should pay more attention when designing power and ground wire in Subscriber Circuit Board.
一是通过优化电路设计、配线分离，包括含接地线的线路板设计；
First, through the optimization of circuit design, matching line separation, ground line board design;
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