| 1. | The unwanted radiation is referred to as background radiation . 这种有害辅射称为背景辅射。 |
| 2. | " for their discovery of cosmic microwave background radiation 发现宇宙微波背景辐射 |
| 3. | Celestial thermal background radiation 天空热背景辐射 |
| 4. | Extragalactic background radiation 河外背景辐射 |
| 5. | Background radiation intensity 背景辐射强度 |
| 6. | Cosmic background radiation 宇宙背景辐射 |
| 7. | Thermal background radiation 热背景辐射 |
| 8. | We believe this background radiation was generated when the universe was very young 我们相信它们是宇宙初开后所残留的辐射。 |
| 9. | The study of infrared background radiation of earth and atmosphere by airborne ftir spectrometer 地球大气红外背景辐射光谱特征研究 |
| 10. | They had found the cool afterglow of the big bang : the cosmic microwave background radiation 他们发现的是大霹雳冷却后的馀晖:宇宙微波背景辐射。 |