| 1. | Wave speed equals frequency times wavelength .
波速等于频率乘以波长。 |
| 2. | That is, light of all wavelengths is present .
就是说，各种波长的光都存在。 |
| 3. | Waves are all the same length and move in step .
所有波的波长均相同，而且同步。 |
| 4. | The opacity is a function of temperature and wavelength .
暗度是温度与波长的函数。 |
| 5. | The light is dispersed into its component wave lengths .
光被色散成各种波长的单色光。 |
| 6. | The absorption coefficient is often strongly wavelength-dependent .
吸收系数往往与波长密切相关。 |
| 7. | The spectrum is just an image of the star in various wave lengths .
光谱正好是恒星在各个波长处的象。 |
| 8. | Such wave fronts are separated from one another by one-half wavelength .
这种波阵面彼此间隔半个波长。 |
| 9. | The shorter the waves are, the more distinct will be the magnified image .
波长越短，放大的物象越清晰。 |
| 10. | Stars emit light which contains only certain characteristic wavelengths .
恒星发出的光只含有特定的波长。 |
