2266| 9
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四层板,GND设为负片,而VCC设为正片意义何在? |
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发表于 2005-4-1 16:31:49
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发表于 2005-4-1 17:12:30
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头像被屏蔽
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发表于 2005-4-1 17:15:12
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发表于 2005-4-2 11:12:12
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发表于 2012-4-27 13:10:35
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发表于 2012-4-27 13:11:19
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