This paper narrates the mould selection when processing holes by RT-300 data punch 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。
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。
Punch CARDS are required of all programs and form the last set of CARDS for each job. Each job may contain several cases or sets of data.
所有的程序都需要打孔卡，并且为每个作业生成最后一组卡片。每一个作业可能包含几个案例和数据集。
Punch card: card punched with a pattern of holes encoding data for storage and reading.
穿孔卡：依照固定模式打孔，作为代码，贮存和阅读资料的卡。
Punch cards were a way to store commands (a type of data, you could say) onto a medium.
穿孔卡片是一种存储命令（一种类型的数据，你可以说）到一个媒介。
The system involves five parts: soft-CPU, Expert System of mold structure, data input, punch-pressing technology analyses and calculation, mold design.
本系统包括五个子系统：软CPU子系统、模具结构专家系统、数据录入子系统、冲压工艺分析计算子系统、模具设计子系统。
The machining information data can be provided for the automatic programming of nc punch system by using the implementing method.
该实体信息数据获得方法的实现，为数控冲床系统的自动编程提供了简便快速的加工信息数据。
Also the little rectangular pieces of paper that are made when any sort of punch card is used for data input purposes.
当使用任意类型的打卡机输入数据时，纸张上也会出现小矩形。
Also the little rectangular pieces of paper that are made when any sort of punch card is used for data input purposes.
当使用任意类型的打卡机输入数据时，纸张上也会出现小矩形。
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