| 1. | The plessey library pen was the first light-pen-based system to be used in libraries .
Plessey图书馆光笔系统是图书馆使用的第一个光笔化系统。 |
| 2. | 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。 |
| 3. | Terminal light - pen system
终端机光笔系统 |
| 4. | Wand bar code scanners
光笔式条码扫描器 |
| 5. | Wand bar code scanners
光笔式条码扫描器 |
| 6. | The plessey library pen was the first light - pen - based system to be used in libraries
Plessey图书馆光笔系统是图书馆使用的第一个光笔化系统。 |
| 7. | Input devices include keyboards and pointing devices such as mouse , joystick , track ball , or light pen
输入设备包括键盘和点击设备如鼠标，操纵杆，跟踪球或光笔。 |
| 8. | A highlighter does not have its own chemical energy : it converts ultraviolet light in sunlight into visible light
萤光笔没有自己的化学能原,是把紫外光改变为可见光而以 |
| 9. | Information technology - pen - based interfaces - common gestures for text editing with pen - based systems
信息技术.基于笔输入的接口.用基于笔输入的系统编辑文本的通用光笔指令 |
