PCB设计 !" #$%&'( )*+,-)* ./0123.456 7 89:$;?@ABCD(E FG,HIJKL%JMNOPQRSJ'(T$UR VWXYFJ'(.Z[\X]^_`abcde.fgh i'(%MN'jklmn /opqRS%rs9:$; =] Zt'(uvwZ +MN'%Zt'(.x yz RS{|}~ .`a Z+&L8= RS Z+ Lc%>¤CD>§¨ .§¨ °>±HIuZ#&$'(7]zby z'( >RS> >]>¤CD8 => ! _.Q>¤.,+¨].> "#8! _=HIuZtJ >>¤ CD8=>§¨> ¤C8=Q>C#×.>¤ 7?ucàE ?°>á ] !$ % Tèé8&=% $% Tè 8=ê.MvwZ#&'( ìí yz X>79:$; .òó =?QRSyzRS òócxRV8ó%&÷=ùú2 ü% X '( I._7 yz]fü77 yz7 × " .7x b fg7?&.'!>&Q(/>)* XM0>+7, >&M/±,- %>./HI\>c >&M0123>c45 >&7&f6 D7(E>)# >& (vw> 8+ >Zê -9 ":; HI/ 8×.>&(\=>?@á AMvwZt>-9 /BBC DC ?@+ EF9:M,G >HI79:$;?/J?@RSXK?7KL??@ á _ZMG?]9:$;> #N1$% /± OPQ R 3 ST , U 8 %……