spectral

adj.

（似）鬼的；幽灵的；谱的；光谱的

spectral analysis光谱分析；频谱分析；光谱分析法

power spectral功率谱

spectral density[电]谱线密度

power spectral density功率谱密度

spectral line谱线，光谱线

spectral method谱方法；波谱法

spectral response光谱响应；频谱响应；光谱灵敏度

spectral resolution光谱分辨率，谱分解

spectral distribution谱分布；光谱强度分布；频谱分布

spectral radius谱半径

spectral decomposition频谱分解；频谱分析；谱相分解；谱表示

spectral band光谱带，频谱带

spectral characteristic光谱特性；波谱特性

spectral region光谱区，光谱范围

spectral absorption光谱吸收；光谱分析

spectral irradiance[光学]分光照度

spectral radiance光谱辐射（强度）；光谱辐射率

spectral lamp n. 光谱灯

free spectral range自由光谱区；自由光谱范围

1. There was no change in his father's position, or in his spectral look.
   他父亲的姿势一点没有更动，阴沉的脸色也依然不变。
2. At times he seems rather ordinary. At other times ethereal, perhaps even spectral.
   有时他好像很正常,有时又难以捉摸,甚至像个幽灵。
3. Beings without form and intelligences without bodies are spectral ghosts guaranteed to mislead.
   无体生命和无形智能，注定是引人误入歧途的鬼怪幽灵。
4. I am studying spectral classification.
   我在学习光谱分类。
5. The visible is the most well-defined spectral region.
   可见光是含意最明确的光谱波段。

Tutorial on Spectral Clustering
A tutorial on spectral clustering
A tutorial on spectral clustering
On spectral clustering: analysis and an algorithm
Compact finite difference schemes with spectral-like resolution
NMRPipe: a multidimensional spectral processing system based on UNIX pipes.
Investigating causal relations by econometric models and cross-spectral methods
Delaglio, F. NMRPipe: a multidimensional spectral processing system based on UNIX pipes. J. Biomol. NMR 6, 277-293
Delaglio, F. et al. NMRPipe: A multidimensional spectral processing system based on UNIX pipes. J. Biomol. NMR 6, 277−293
Granger, C.W.J.: Investigating Causal Relations by Econometric Models and Cross-spectral Methods. Econometrica 37(3), 424-438