spectral/ˈspektrəl; `spɛktrəl/ adj(fml 文)1 of or like a spectre(1) （似）鬼的, 幽灵的: spectral figures 鬼影.2 of the spectrum or spectra 谱的; 光谱的: spectral colours 谱色.
牛津英汉双解词典