英语词汇light pen的意思翻译、用法及例句-英汉词典-京师网

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词汇	light pen
释义	light pen noun [ C ] (also lightpen) uk/ˈlaɪt ˌpen/ us/ˈlaɪt ˌpen/ 读码器，条形码扫描器 a pen-shaped device used for reading bar codes You access the system simply by moving a light pen across the bar code. 更多例句 Light pens are rarely seen these days, now that touchscreens and graphics tablets are widely available. The device came with a child-size mouse, a colour printer and a light pen for drawing. You can highlight one of the options by tapping the touchscreen or with the lightpen. Instead of using chalk or markers, students answer questions using light pens or hand-held clickers.
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