51?????????????????????÷???
?.KEIL????????á?
??.??д????????á?
??.Proteus????????á?
??.Protel 99 se????
???PCB????????????????
???/????????30mil;
???/??????????15mil;
???/????????hole size??30mil;diameter??32mil;
???/??????????hole size??15;diameter??25mil;
??????????? 15mil;
??????20mil;
?????С??35*4mil??
????admin ?????????2018-05-18
