Because of the complicated manufacture technique of pcb , for example , a great deal of use of ultro - microcomponent and ultro - slimwire , the quality inspection of pcb becomes very difficult and hardly automatized 隨著生產(chǎn)技術(shù)的提高, pcb制作工藝日趨復(fù)雜,大量超微器件和超細(xì)走線的采用,使pcb的質(zhì)量檢驗(yàn)成為一件非常困難的工作,難以實(shí)現(xiàn)自動(dòng)化。