This paper narrates the mould selection when processing holes by RT-300 datapunch press and gives the flow diagrams.
本文叙述了RT——300数控冲床加工圆形孔时模具的选择，并画出了圆模具选择流程图。
2
Statistician Herman Hollerith used punch cards to tabulate data from the 1890 U.S. census.
统计学家赫尔曼·霍尔瑞斯用打孔卡把1890年美国人口普查数据制成表格。
3
Doesn't change the argument, but wanted the correct data included here. here was the big punch line - because Google will give you AD splits on search if you use that version!