求翻译：Drilling target process is not an important step in PCB production, as long as the holes drilled in the copper ring inside.是什么意思？

待解决

悬赏分：1 - 离问题结束还有

Drilling target process is not an important step in PCB production, as long as the holes drilled in the copper ring inside.

问题补充：

匿名	2013-05-23 12:26:38 钻井目标进程不是在 PCB 生产中的重要一步，只要孔钻孔内的铜环中。

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