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one of the
Fraunhofer lines in the green of solar spectrum
〔太阳光谱绿色部分中的〕夫琅和费谱线 E
(波长为5269.723埃)
one of the
Fraunhofer lines in the red of the solar spectrum
〔太阳光谱红色部分中的〕夫琅和费谱线 C
(波长为6563.045埃)
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