英语词汇“optical spectra”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	optical spectra
释义	optical spectra optical spectra [′äp·tə·kəl ′spek·trə] (spectroscopy) Electromagnetic spectra for wavelengths in the ultraviolet, visible and infrared regions, ranging from about 10 nanometers to 1 millimeter, associated with excitations of valence electrons of atoms and molecules, and vibrations and rotations of molecules.
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