| 1. | Laser beams may cauterize and heal ulcers .
激光束可以烧灼和愈合溃疡。 |
| 2. | Laser beams are also used in surgery .
激光束还可用于外科手术。 |
| 3. | How does a laser beam vaporize steel ?
激光束是怎样使钢气化的？ |
| 4. | Blood-vessel cuts made by laser beams do not need clamps or stitches
用激光束切开的血管不需要夹紧或缝合。 |
| 5. | The high intensity of a laser beam makes it a convenient drill .
激光束的强度极高，这就使它成为一种方便的钻孔工具。 |
| 6. | The researchers found similar results when the laser beam strikes chlorofluorocarbons in the liquid state .
研究人员发现用激光照射液态的氟氯烃时，也得到类似结果。 |
| 7. | A laser beam travelling through an enclosed tube can carry as much information as 80 million tv channels !
在一个封闭管道中传输的激光束能传送多达8000万个电视频道的信息。 |
| 8. | Quite apparent is the fact that most laser beams are exceedingly directional, or if you will, highly collimated .
非常明显的是，大多数激光光束有很好的方向性，或者说，是高度准确的。 |
| 9. | Alternatively, the ripples can be irradiated from above with a laser beam to produce an instantaneous reconstruction in reflected light .
或者也可以用一束激光从上面照射波纹，在反射光中产生即时的重建象。 |
| 10. | . . . to reflect my laser beam right back at me
. . .使得它刚好反射我的镭射电波给我 |
