n.键控芽孔机；盘式穿孔机；键盘穿孔机v.用打孔机打孔网络键控穿孔机；按键打孔；键盘凿孔机变形：复数：keypunches过去分词：keypunched现在分词：keypunching英英释义： KeypunchA keypunch is a device for precisely punching holes into punch cards at specific locations as determined by the keys struck by the operator.以上来源于:Wik