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light pen

US 
UK 
  • n.光笔;(用于向计算机输入信息的)光笔;条码识读器
  • Web灯笔;电光笔;光孹式扫嫐机
Plural Form:light pens  
light pen
n.
1.
(用于向计算机输入信息的)光笔a piece of equipment, shaped like a pen, that is sensitive to light and that can be used to pass information to a computer when it touches the screen
2.
光笔;条码识读器a similar piece of equipment that is used for reading barcodes

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Definition:
Category:AllAll,OralOral,WrittenWritten,TitleTitle,TechnicalTechnical
Source:AllAll,DictionaryDictionary,WebWeb
Difficulty:AllAll,EasyEasy,MiddleMiddle,HardHard
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