摘要
通过观察PTH线的不同类型孔内无铜现象,针对PTH的流程特性,制定相应的预防措施,以求最大限度的减少孔内无铜发生。
Observe the difference void which be caused in PTH, then establish relevant prevent measurer according to the process and control request. In order to decrease the radio of void occur.
出处
《印制电路信息》
2006年第1期33-35,共3页
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