英语词汇“laser pen”的意思、释义、用法解释及翻译-春雷网

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词汇	laser pen
释义	Definition of laser pen in English: laser pen noun 1A small, slender hand-held device emitting a laser beam, used for scanning bar-codes. 2A hand-held device emitting a narrow beam of coloured light, typically used by speakers to project a visual pointer on to a screen. Origin 1980s; earliest use found in Industry Week. Definition of laser pen in US English: laser pen noun 1A small, slender hand-held device emitting a laser beam, used for scanning bar-codes. 2A hand-held device emitting a narrow beam of coloured light, typically used by speakers to project a visual pointer on to a screen. Origin 1980s; earliest use found in Industry Week.
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