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1921年2月5日

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1921年2月的天空

参宿四的直径—如何测量以及其意义

作者：亨利·诺里斯·罗素

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More by Henry Norris Russell

This article was originally published with the title “The Heavens in February, 1921” in 大众科学 Magazine Vol. 124 No. 6 (February 1921), p. 112
doi:10.1038/scientificamerican02051921-112

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