“Poincaré-Birkhoff normal form”的概念、定义、翻译、参考文献-科学参考

单词	Poincaré-Birkhoff normal form
释义	Poincaré-Birkhoff normal form Encyclopedia 理学分岔释 Poincaré-Birkhoff normal form庞加莱-伯克霍夫范式对降维所得到的系统进行简化，在保持分岔特性的前提下尽可能转化为一种较为简单和规范的形式。
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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。