a spectroscope or spectrometer that produces a photographic record (spectrogram) of a spectrum声谱仪; 产生摄制记载的分光镜或分光仪
noun [专属名词]光谱仪;摄谱仪
A British astronomer was analyzing a spectrograph of sunlight, and he noticed a particular pattern of spectral lines that didn't match anything in the library. 一位英国天文学家在分析一台太阳光摄谱仪时,注意到一种特殊的光谱线模式,它与图书馆里的任何一种都不匹配。