| line spectrum | (n) a spectrum in which energy is concentrated at particular wavelengths; produced by excited atoms and ions as they fall back to a lower energy level |
| 線スペクトル | [せんスペクトル, sen supekutoru] (n) line spectrum [Add to Longdo] |
| 暗线光谱 | [暗 线 光 谱 / 暗 線 光 譜] dark-line spectrum [Add to Longdo] |