技术专栏
PCB中间开孔能做吗
4***1A
684
1
<span style=‘font-size:14px;font-family:宋体’>PCB</span><span style=‘font-size:14px;font-family:宋体’>正中间开个1.9cm*1.9cm的正方形窗口,可以做吗</span>
