| 1. | The useful magnification by an optical instrument is limited by the resolving power of that instrument .
光学仪器有效的放大倍数受到该仪器分辨能力的限制。 |
| 2. | The index of refraction of most of the common glasses used in optical instruments lies between 1. 46 and 1. 96 .
光学仪器中最常用的玻璃其折射率多在146到196之间。 |
| 3. | The reflector action of such a conducting layer makes it possible to build a radio telescopes that correspond exactly to optical instrument .
这种导电层反射器的作用，使我们可以精确地对照光学仪器来建造射电望远望。 |
| 4. | Optics and optical instruments . reference wavelengths
光学和光学仪器.基准波长 |
| 5. | Microscopes and telescopes are optical instruments
望远镜和显微镜是光学仪器。 |
| 6. | Telescopes and microscopes are optical instruments
望远镜和显微镜都是光学仪器。 |
| 7. | Optics and optical instruments - reference wavelengths
光学和光学仪器.参考波长 |
| 8. | Telescopes and microscopes are visual instruments
望远镜和显微镜是光学仪器。 |
| 9. | One that makes lenses and eyeglasses
光学仪器制造技师光学透镜和眼镜的制造者 |
| 10. | Temperature ranges for lubricants for optical instruments
光学仪器用润滑剂的温度范围 |
