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单词 spectral regions
释义 spectral regions
[`spek·trǝl ´rē·jǝnz]
SPECTROSCOPY
Arbitrary ranges of wavelength, some of them overlapping, into which the electromagnetic spectrum is divided, according to the types of sources that are required to produce and detect the various wavelengths, such as x-ray, ultraviolet, visible, infrared, or radio-frequency.
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