“黑人大迁徙”的概念、定义、翻译、参考文献-科学参考

单词	黑人大迁徙
释义	黑人大迁徙 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	alternating logspace complexity class, AL alternating loose and dry stool alternating magnetic field alternating mapping alternating matrix alternating method alternating multilinear form alternating multilinear mapping alternating operation Alternating order method alternating part alternating path method alternating permutation alternating polynomial alternating polynomial time complexity class alternating polynomial time complexity class, AP alternating process alternating product alternating pulse alternating renewal process alternating representation alternating ring alternating satellite alternating sequence alternating series

科学参考收录了854744条科技类词条，基本涵盖了常见科技类参考文献及英语词汇的翻译，是科学学习和研究的有利工具。