| 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. | 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。 |
| 7. | - sharp as a tack . - just , it ' s , like , a laser beam
-敏锐如针-就像是激光束一样 |
| 8. | Sharp as a tack . - just , it ' s , like , a laser beam
敏锐如针-就像是激光束一样 |
| 9. | Test methods of optical power meters for laser beam
激光束用光强度仪的试验方法 |
| 10. | Laser engineering - laser beam hardenability test
激光技术.激光束淬透性试验 |
