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演化恒星的色球活动与恒星自转周期间存在很好的相关性。
The relation between stellar chromospheric activity and rotation of evolution stars have a good relativity.
youdao
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演化恒星的色球活动与恒星自转周期间存在很好的相关性。
The relation between stellar chromospheric activity and rotation of evolution stars have a good relativity.
youdao