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north polar sequence,NPS
释义
north polar sequence,NPS
北极星序; 北天极附近的恒星光度序列。其96颗恒星的照相星等和仿视星等已精确测定,可作恒星测光标准。
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papyriscala tenuilirata
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更新时间:2025/11/18 21:58:40