名词激光; 激光器，镭射器
1. 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.
laser
e.g. ...new laser technology...
新的激光技术
e.g. 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. 激光器
A laser is a machine that produces a laser beam.
e.g. ...the first-ever laser, built in 1960.
有史以来第一台激光器，于1960年制造
1. 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.
laser
e.g. ...new laser technology...
新的激光技术
e.g. 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. 激光器
A laser is a machine that produces a laser beam.
e.g. ...the first-ever laser, built in 1960.
有史以来第一台激光器，于1960年制造
