爱词霸在线词典18926824013

爱词霸在线词典

日期:2020-01-18 17:00 人气:

N-COUNT 激光 A laser is a narrow beam of concentrated light produced by a special machine. It is used for cutting very hard materials, and in many technical fields such as surgery and telecommunications.

...new laser technology...

新的激光技术

Researchers realised that a tunable laser beam might be useful in surgery.

研究人员意识到,可调谐激光束也许可以用在外科手术中。

2

N-COUNT 激光器 A laser is a machine that produces a laser beam.

...the first-ever laser, built in 1960.

有史以来第一台激光器,于1960年制造

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