可纳入哈勃序列的星系。
文章针对正常星系光谱给出了一种新的谱线自动提取方法。
The present paper presents a novel technique of spectral line auto-extraction for normal galaxy spectra.
星系通常分为正常星系(NG)与活动星系(AG)两类。
Galaxies can be divided into two classes: normal galaxy (NG) and active galaxy (AG).
正常星系的光谱是天体光谱谱线自动提取中最难处理的一种。
Spectral line extraction for normal galaxy spectra is the most difficult task in spectral line auto-extraction of celestial spectra.
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