单词 | emission spectrometer |
释义 | emission spectrometer [i`mish·ǝn spek`träm·ǝd·ǝr] SPECTROSCOPY A spectrometer that measures percent concentrations of preselected elements in samples of metals and other materials; when the sample is vaporized by an electric spark or arc, the characteristic wavelengths of light emitted by each element are measured with a diffraction grating and an array of photodetectors. |
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