“Immigration Act”的概念、定义、翻译、参考文献-科学参考

单词	Immigration Act
释义	Immigration Act Encyclopedia 历史学美国历史释 Immigration Act移民法美国关于移民政策的联邦法律规定，世界上最完善、最复杂的移民法典。
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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。