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P Cygni stars
释义
P Cygni stars
Encyclopedia
理学
恒星光谱
释
P Cygni stars
天鹅座P型星
一种光谱具有特殊发射线、光谱型大部分是B型、气壳向外膨胀的恒星。
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industrial scientific and medical band
industrial scientific and medical band, ISM
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