| 释义 |
Definition of laser pen in English: laser pennoun 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 pennoun 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. |