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猎户四边形
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猎户四边形
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Trapezium of Orion
猎户四边形
位于猎户座大星云M42(见梅西叶星表)中央的疏散星团,其中的4颗亮星构成一个不规则四边形,因而得名。又称猎户四边形星团。
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Site-Memorial of First National Congress of the Communist Party of China
Site-Memorial of the Peasant Movement Institute Directed by Comrade Mao Zedong
site occupation factor
Site of Baijiao 1 Shipwreck at Dinghai
Site of Baofenglong Business Firm
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