In electronics, a type of compact, printed circuit board that has several layers of circuit etch or pattern, one over the other, interconnected by electroplated holes. These holes can also receive component leads.

• 电子技术中的一种紧致型印制电路板,由多层板组成,各层上有蚀刻的电路或电路图形,一层压一层,通过电镀孔互连起来,这些孔也还用来接受元件的引腿。