技术专栏
PCB拼板后面没有锣中间大孔
8***8R
215
2
<img src=‘/uploadfiles/image/20210527/1622086842862088703.png’ title=‘1622086842862088703.png’ alt=‘PCB2021.png’/>

<img src=‘/uploadfiles/image/20210527/1622086842862088703.png’ title=‘1622086842862088703.png’ alt=‘PCB2021.png’/>