spectral
含义: Relating to a spectrum, particularly the range of wavelengths of electromagnetic radiation. Also used in literary English to mean ghostly or phantom-like.
In physics and astronomy, spectral analysis involves examining the wavelengths of light emitted or absorbed by a substance to determine its composition, temperature, or motion. Astronomers classify stars by spectral type. In mathematics and data science, spectral methods involve eigenvalue decomposition of matrices. The literary meaning — resembling a ghost — draws on 'spectre' rather than 'spectrum,' though both ultimately share the same Latin root. Context usually makes the intended sense clear.
例句
- Spectral analysis of the distant galaxy revealed the presence of hydrogen and helium in its outer atmosphere. 对该遥远星系的光谱分析揭示了其外层大气中存在氢和氦。El análisis espectral de la galaxia lejana reveló la presencia de hidrógeno y helio en su atmósfera exterior.その遠方銀河のスペクトル分析により、外層大気に水素とヘリウムが存在することが明らかになった。그 먼 은하의 스펙트럼 분석을 통해 외부 대기에 수소와 헬륨이 존재한다는 것이 밝혀졌다.
- The spectral figure of the old lighthouse keeper is said to haunt the clifftop path on stormy winter evenings. 据说,老灯塔看守人幽灵般的身影在暴风雨的冬夜出没于悬崖小径。Se dice que la figura espectral del viejo farero aparece por el sendero del acantilado en las tormentosas noches de invierno.嵐の冬の夜には、老いた灯台守の亡霊のような姿が崖の小道に出没するという。폭풍이 몰아치는 겨울 저녁이면, 늙은 등대지기의 유령 같은 모습이 절벽 위 오솔길에 나타난다고 전해진다.
- The researchers employed spectral clustering techniques to identify natural groupings within the genomic dataset. 研究人员采用谱聚类技术来识别基因组数据集中的自然分组。Los investigadores emplearon técnicas de agrupamiento espectral para identificar agrupaciones naturales dentro del conjunto de datos genómicos.研究者たちはゲノムデータセット内の自然なグループ分けを特定するためにスペクトルクラスタリング技術を用いた。연구자들은 게놈 데이터세트 내의 자연스러운 그룹을 식별하기 위해 스펙트럴 클러스터링 기법을 사용했다.
发音
用法指南
语境: academic, general
语气: neutral
起源与历史
From Latin spectrum (appearance, image), from specere (to look at). The scientific sense dates from Newton's optical experiments in the 1670s; the ghostly sense developed in parallel from 'spectre.'
文化背景
Era: Modern
Generation: All ages
Social background: Universal
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