?設(shè)計(jì)規(guī)則如圖所示,則地線(GND)會布多寬?()
A.20或40milB.20milC.40milD.30mil
A.BottomLayerB.BottomOverlayC.BottompasteD.Bottomsolder
A.Multi layerB.TopOverlayC.Mechanical 1D.KeepOutLayer