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PCB 布局、布线基本原则
2013-10-8 19:57
- 恩智浦半导体(NXP)
- 3
- 1695
![](https://bbs.21ic.com/static/image/common/icon_quote_m_s.gif)
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本人使用protel99SE PCB制作的一些技巧
2013-10-9 15:34
- PCB技术
- 31
- 8463
![](https://bbs.21ic.com/static/image/common/icon_quote_m_s.gif)
![](https://bbs.21ic.com/static/image/common/icon_quote_m_e.gif)
地线包晶振,晶振放在顶层的,这一圈底线放那层啊?
2015-12-29 12:37
- PCB技术
- 32
- 10617
![](https://bbs.21ic.com/static/image/common/icon_quote_m_s.gif)
![](https://bbs.21ic.com/static/image/common/icon_quote_m_e.gif)
求大神指点 PCB补泪滴后覆铜出现没有覆铜的小格子 如何解决
2016-11-4 15:54
- PCB技术
- 10
- 2802
![](https://bbs.21ic.com/static/image/common/icon_quote_m_s.gif)
![](https://bbs.21ic.com/static/image/common/icon_quote_m_e.gif)
![](https://bbs.21ic.com/static/image/common/icon_quote_m_s.gif)
![](https://bbs.21ic.com/static/image/common/icon_quote_m_e.gif)
![](https://bbs.21ic.com/static/image/common/icon_quote_m_s.gif)
![](https://bbs.21ic.com/static/image/common/icon_quote_m_e.gif)
![](https://bbs.21ic.com/static/image/common/icon_quote_m_s.gif)
![](https://bbs.21ic.com/static/image/common/icon_quote_m_e.gif)
![](https://bbs.21ic.com/static/image/common/icon_quote_m_s.gif)
![](https://bbs.21ic.com/static/image/common/icon_quote_m_e.gif)
如图,两个过孔平行相交的地方不能覆铜
2013-10-9 18:08
- PCB技术
- 3
- 1156
2
3
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