The bar codes on the products are read by lasers.
产品上的条形码是用激光读取的。
Professor Orr has developed interesting ways of tagging chemical molecules using existing laboratory lasers.
奥尔教授已经研发出了用现有的实验室激光给化学分子贴标签的有趣方法。
The parts of the enterprise which are scientifically the most exciting are unlikely to be militarily useful. I am thinking here of the development of new kinds of lasers.
这份计划中，从科学角度看最让人兴奋的部分在军事上却可能无用。我指的是新型激光开发。
Pap smears work by detecting abnormal cells that are cancer precursors and that can be destroyed using techniques like lasers.
巴氏涂片可以检测异常细胞，这些细胞是癌症的前兆，可以使用激光等技术来摧毁它们。
Other machines would distinguish problem weeds from crops and eliminate them with shots from high-power lasers or a microdot of pesticide.
其他的机器将有问题的杂草从农作物中区分出来，然后用高能激光照射或农药微粒来消灭它们。
They have not yet come up with the $5 million that EPRI says will be needed to develop a commercial system, by making the lasers yet smaller and cheaper.
他们还没有拿出美国电力科学研究院说需要的500万美元，这笔钱是为了通过制造更小更便宜的激光器来开发一个商业系统。
Many lasers are pumped by light.
许多激光器是用光来激发的。
他们让我看他们的激光。
Scientists built hundreds of lasers.
科学家建造了成百上千个激光器。
The lasers demonstrate very good performances.
这些激光器展示出非常好的性能。
Semiconductor lasers and light-emitting diodes
半导体激光器和发光二极管
The lasers were real but the plan was fanciful.
激光倒是真的，但这个计划却是白日做梦。
The lasers by the runways act a bit like radars.
机场跑道两侧的激光起到一些类似雷达的作用。
How do scientists control brain cells with lasers?
科学家们如何用激光控制脑细胞？
Green lasers came shooting out and hit the cell bars.
绿色的激光射中了牢房的栅栏。
Or perhaps, ultrasound can be used instead of lasers.
或者用超声波代替激光。
LICHTMAN: What do you mean, in the lasers in CD players?
李奇曼：你是什么意思，CD播放机里的激光？
They've used lasers to etch the Yangcheng name on crab shells.
他们用激光把阳澄字样刻在螃蟹壳上。
The idea of using lasers to trigger fusion has a long history.
利用激光触发聚变的想法由来已久。
In industry, lasers are the saws and drills that never get dull.
在工业上，激光被用来作为锯和钻头，而且它永远不会变钝。
Well, we've got to find something else. Unless you've got lasers.
我们得想想别的办法，除非我们还能用激光。
We have already fabricated and measured many lasers with the design.
我们已经在这种设计下制作并测量了许多激光器。
Perhaps. Babbage is no expert on the medical applications of lasers.
也许巴贝奇不是激光医疗应用的专家。
In all lasers, light is repeatedly reflected within a mirrored cavity.
在所有的激光器中，光都在一个反射腔中重复反射。
Scientists do have a high-tech method for slowing atoms, however: lasers.
但科学家们已经找到了一种高科技方法令原子变慢: 激光.
Using lasers to trigger fusion could prove cheaper than other techniques.
利用激光触发聚变或许比其他方法更合算。
The Boeing laser integrates multiple thin-disk lasers into a single system.
波音公司激光系统集成了多个薄型激光器。
We've reported before about the seriousness of pointing lasers at aircraft.
用激光灯指点飞机的危险性，我们早已知道。
Car engines could soon be fired by lasers instead of spark plugs, researchers say.
研究人员说，汽车发动机很快将由激光器来引燃，从而取代火花塞。
Oil droplets lit by lasers swirl in a wind tunnel around a flowering blade of grass.
风洞中激光照亮的油滴围绕着草叶周围打着转。
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