"舍得成本的焊接有時是PCB板中一根細銅管連接上下的焊盤". 兄弟，這種過孔是最便宜的化學沉積，根本不是銅管。

來源: coolwin 於 2019-11-19 10:03:05 [博客] [舊帖] [給我悄悄話] 本文已被閱讀：次

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