"舍得成本的焊接有时是PCB板中一根细铜管连接上下的焊盘". 兄弟，这种过孔是最便宜的化学沉积，根本不是铜管。

来源: coolwin 于 2019-11-19 10:03:05 [博客] [旧帖] [给我悄悄话] 本文已被阅读：次

WENXUECITY.COM does not represent or guarantee the truthfulness, accuracy, or reliability of any of communications posted by other users.