Hauv tsab xov xwm no, peb yuav tshawb txog qhov sib txawv ntawm FR4 thiab hloov pauv PCBs, qhia meej txog lawv cov kev siv thiab qhov zoo. Thaum nws los txog rau cov ntawv luam tawm Circuit Board (PCBs), muaj ntau yam kev xaiv, txhua tus muaj lawv tus kheej cov yam ntxwv thiab kev siv. Ob hom kev siv feem ntau yog FR4 thiab f ...
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