woaidashui 发表于 2015-6-29 14:53, ~$ Q- u; o# e4 z& v8 X+ l4 J; R 以8层二阶板为例,激光盲孔即为VIA1-2,via1-3,via2-3,via7-8,via6-8,via6-7。机械埋孔为via3-6。) W* d2 \. G: ?' W % `- i0 |6 }3 e+ W+ s ...