“The Great Migration of African Americans”的概念、定义、翻译、参考文献-科学参考

单词	The Great Migration of African Americans
释义	The Great Migration of African Americans Encyclopedia 历史学美国历史释 The Great Migration of African Americans黑人大迁徙 1916～1970年约600万非裔美国人从美国南部各州的乡村地区迁徙至东北部、中西部以及西部地区的大规模人口流动。又称北上大迁徙。
随便看	strong interaction strong interaction of biomolecules strong invariance principle strong irreducible chain strong isomorphism strong Jeans theorem strong lacuna strong law of large numbers strong law of small numbers strong Lefschetz theorem strong light strong limit strong limit cardinal strong line strong linear element strong local extremum strong localization strong Lucas pseudoprime strongly acid soil strongly acute type strongly alkaline soil strongly axiomatizable theory strongly binary tree strongly bounded sequence strongly branched covering

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