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1. Oxford Dictionary

   spectra

   • IPA[ˈspɛktrə]

   英式

   • plural form of spectrum
2. • 相關詞

   spectrum

   • n.
     a band of colors, as seen in a rainbow, produced by separation of the components of light by ...

   Oxford American Dictionary

   spectrum

   • n.
     a band of colours, as seen in a rainbow, produced by separation of the components of light by ...

   Oxford Dictionary

   line spectrum

   • n.
     an emission spectrum consisting of separate isolated lines.

   Oxford Dictionary

   line spectrum

   • n.
     an emission spectrum consisting of separate isolated lines.

   Oxford American Dictionary

   mass spectrum

   • n.
     a distribution of ions shown by the use of a mass spectrograph or mass spectrometer.

   Oxford American Dictionary

   broad-spectrum

   • adj.
     denoting antibiotics, pesticides, etc. effective against a large variety of organisms: pretreatment with broad-spectrum antibiotics

   Oxford Dictionary

   electromagnetic spectrum

   • n.
     the range of wavelengths or frequencies over which electromagnetic radiation extends.

   Oxford Dictionary

   spectrum analyzer

   • n.
     a device for analyzing a system of oscillations, especially sound, into its separate components.

   Oxford American Dictionary

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3. • 更多解釋

   spectra

   • IPA[ˈspektrə]

   美式

   • plural form of spectrum

   Oxford American Dictionary