1·Perforating Machine IBM's first patent (issued July 25, 1911) described an invention related to punched-card tabulation.
美国专利＃998631：打孔机 IBM的第一项专利（1911年7月25日发布）介绍有关打孔卡制表的一项发明。
2·This machine is equipped with embossing, perforating and automatic cutting device.
本机配有压花、打孔、自动分切装置。
3·This machine is auxiliary equipment for rewinding perforating toilet paper machine and diamond paper machine.
本机为复卷打孔卫生纸机、方巾纸机的辅助设备。
4·The binding module group is superposed by three boards, therefore the perforating binding machine has the advantages of less elements and easy assembling.
借此，所述装订模组由三片板体所叠置而成，因此构件较少，组装容易。