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    laser

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    laser

    Longman Dictionary of Contemporary English 5++朗文当代英语 5++LDOCE 5++朗文 5++
    Related topics: Technology, Visual, Physics, Medicine, Industry
    la·ser /ˈleɪzə $ -ər/ ●●○ noun [countable]  1  Ta piece of equipment that produces a powerful narrow beam of light that can be used in medical operations, to cut metals, or to make patterns of light for entertainment 激光器 laser surgery 激光(外科)手术2. a beam of light produced by a laser 激光    Origin laser (1900-2000) From "light amplification by stimulated emission of radiation"
    la·ser nounChineseSyllable


    laser
    la‧ser /ˈleɪzə $ -ər/ noun [countable]
     Date: 1900-2000
     Origin: From "light amplification by stimulated emission of radiation"
    1. a piece of equipment that produces a powerful narrow beam of light that can be used in medical operations, to cut metals, or to make patterns of light for entertainment:
        laser surgery
    2. a beam of light produced by a laser


    laserBrE /ˈleɪzə(r)/ 🔊NAmE /ˈleɪzər/ 🔊 nouna device that gives out light in which all the waves oscillate (= change direction and strength) together, typically producing a powerful beam of light that can be used for cutting metal, in medical operations, etc. 激光器◆a laser beam激光束◆a laser navigation device激光导航装置◆The barcodes on the products are read by lasers. 产品上的条码是用激光读取的。🔊🔊◆a laser show (= lasers used as entertainment) 激光表演◆She's had laser surgery on her eye. 她做了眼部激光手术。🔊🔊