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求教:为什么我的cadence管脚超过14个就不能保存
2015-3-23 15:25
- PCB技术
- 3
- 3377
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请问usb接口的封装这里要删除轮廓线吗?
2010-5-21 15:30
- PCB技术
- 3
- 1837
![](https://bbs.21ic.com/static/image/common/icon_quote_m_s.gif)
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新手 有用allegro PCB 软件的吗? 加一下QQ共同进步!
2010-5-25 10:07
- PCB技术
- 5
- 1495
![](https://bbs.21ic.com/static/image/common/icon_quote_m_s.gif)
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DDR3信号质量问题求救
2010-5-21 15:46
- EMC&可靠性设计
- 3
- 2772
![](https://bbs.21ic.com/static/image/common/icon_quote_m_s.gif)
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BGA扇出问题
2010-4-29 12:53
- PCB技术
- 3
- 4955
![](https://bbs.21ic.com/static/image/common/icon_quote_m_s.gif)
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几年前画的板子
2010-5-13 13:55
- PCB技术
- 20
- 3503
![](https://bbs.21ic.com/static/image/common/icon_quote_m_s.gif)
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如何可以让钻孔表的误差值不要输出来,(Allegro)
2010-4-16 10:30
- PCB技术
- 1
- 1720
![](https://bbs.21ic.com/static/image/common/icon_quote_m_s.gif)
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cadence orcad capture cis未响应
2013-4-8 15:02
- PCB技术
- 4
- 8834
![](https://bbs.21ic.com/static/image/common/icon_quote_m_s.gif)
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新产品,即将上市
2012-8-17 00:34
- PCB技术
- 61
- 10401
![](https://bbs.21ic.com/static/image/common/icon_quote_m_s.gif)
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请教关于电源线和地线隔离的问题
2010-4-7 11:45
- PCB技术
- 5
- 3195
![](https://bbs.21ic.com/static/image/common/icon_quote_m_s.gif)
![](https://bbs.21ic.com/static/image/common/icon_quote_m_e.gif)
请教高手咪头问题
2013-5-9 00:33
- PCB技术
- 8
- 3185
![](https://bbs.21ic.com/static/image/common/icon_quote_m_s.gif)
![](https://bbs.21ic.com/static/image/common/icon_quote_m_e.gif)
关于PCB的一丁点资料---肯定有你想要的!打造最强贴!
2024-6-23 20:46
- PCB技术
- 683
- 72476
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一种视频多选1无闪烁切换方法
2010-3-18 17:22
- 数字广电
- 11
- 2576
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淘宝卖家和买家的经典对话
2010-12-13 17:27
- 情感婚姻研习社
- 26
- 4457
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娱乐一下~
2012-1-5 15:24
- 情感婚姻研习社
- 22
- 3191
![](https://bbs.21ic.com/static/image/common/icon_quote_m_s.gif)
![](https://bbs.21ic.com/static/image/common/icon_quote_m_e.gif)
发图,请教cycloneiii的两层板
2014-11-11 15:23
- PCB技术
- 14
- 3220
![](https://bbs.21ic.com/static/image/common/icon_quote_m_s.gif)
![](https://bbs.21ic.com/static/image/common/icon_quote_m_e.gif)
最近画的板子,ALLGERO的,大虾指点一下~~
2015-7-21 10:35
- PCB技术
- 16
- 2097
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allegro 如何删除没有显示的铺铜
2010-3-17 22:01
- PCB技术
- 3
- 4483
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2
3
近期访客