| 1. | Reflection of a beam of light on the diaphragm falls on a phototransistor .
经膜片反射的光束照射到光敏管上。 |
| 2. | A small flay, attached to this body, intercepts a beam of light coming from a source and directed to a photocell .
附在该物体上的光罩截取对着光电管的光束。 |
| 3. | The effects produced when a beam of light falls on a crystal for varying angles of incidence can be readily visualized by a geometrical representation .
投射到晶体上的光束，由于入射角的变化所产生的不同效应，可以很方便地用一种几何图形体直观地显示。 |
| 4. | A beam of light produced by a laser can weld metals
激光器发生的光束可以焊接金属。 |
| 5. | Do you see a beam of light coming through the thick fog
你看见浓雾中射出的一道光线吗？ |
| 6. | This is what you see when you break up a beam of light with a prism
这就是你用棱镜分解一束光时所看到的东西。 |
| 7. | The papillary light reflex is elicited by shining a beam of light into an eye
瞳孔对光反射是由光束射入眼睛所产生。 |
| 8. | It has been found that a beam of light produced by a laser can burn a hole in a diamond
人们发现，由激光器产生的一道光束能在金刚石上打孔。 |
| 9. | Lenses of this kind may be used , for example , as beam - splitting mirrors to divide a beam of light into two parts
这类镜片可用作分光镜，将一束光分成两部份。 |
| 10. | In a laser printer , a device that uses a modulator crystal to deflect a beam of light and effectively turn it on or off
在激光印刷机中的一种装置,它利用一块调制晶体使光束偏转并将其接通或断开。 |
