spectrographic
  光譜的
  spec·tro·graph·ic /ˌspɛkt(r)əˈgræfɪk/ 形容詞
  光譜的,攝譜的
  Spec·tro·graph n.   Physics (a) An apparatus for photographing or mapping a spectrum. (b) A photograph or picture of a spectrum. -- Spec*tro*graph*ic a. -- Spec*tro*graph*ic*al*ly adv. -- Spec*trog*ra*phy n.
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  spectrographic
       adj : relating to or employing a spectrograph