lightpen

英 ['laɪtpən] 美 ['laɪtpən]

• n. [计]光笔(计算机的一种输入设备)

例句

用作名词 (n.)

1. They had recently installed their lightpen system in a supermarket for stocktaking purpose.
   他们最近在超级市场安装了用于盘点库存的光笔系统。