“永年项”的概念、定义、翻译、参考文献-科学参考

单词	永年项
释义	永年项 Encyclopedia 理学非线性振动近似解析方法释 secular term永年项当时间趋于无限大时，直接展开法求得的渐近解的表达式中有时会出现振幅趋于无限大的某些项。其破坏了解的一致有效性。 Mathematics secular term久期项又称“永年项”^†
随便看	sea islands management in China sea islands structure sea-keeping abilities of fishing vessel Seal seal sea-land breeze sealant sea-launched launch vehicle Seal Carving of Cha Meng Xuan seal coat Seal Cutting Seal cutting art dictionary sealed auction sealed confidential military documents sealed fence sealed imperial decrees sent by the Grand Council of State sealed motor sealed radioactive source sealed sampling sealed source sea level sea level change sea level change/eustasy sea-level correction Seal for King of Dian Kingdom

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。