punched hole

• 穿孔

punched hole的用法和样例：

例句

1. One of the horizontal lines on a punched card.
   穿孔卡片上的水平行。
2. A device which reads data from punched cards and sends them to the computer.
   从穿孔卡片上读出数据送入计算机的一种装置。
3. The paper presents the principle of no burr doub le-faced striking hole and work process.
   介绍了无毛刺双面冲孔的原理及手把体模锻件双面冲孔的工作过程。