“邮政史”的概念、定义、翻译、参考文献-科学参考

单词	邮政史
释义	邮政史 Encyclopedia 工学〔交通史〕释 postal history邮政史邮政发展的历史。邮政是依赖实物传输网进行书面通信和快速送达小件物品的系统。“邮”指通信方式和组织，“政”指由国家政权进行统治。数千年来，绝大多数邮政系统为政府运行。至今，邮政大力发展，已经具有通政通民通商的特征，也是国民经济运行不可或缺的行业。
随便看	total pressure recovery coefficient of turbine guide vanes total pressure ventilation total price volume total probability total probability formula total probability theorem total productive maintenance total projective group total proper-motion total public expenditure policy total quality control total quality control of aquatic food production total quality management Total Quality Management of Library total quantity control and quota management of irrigation total quantity control of regional water consumed total quantum number total quantum number, principal quantum number total quotient total quotient ring total radiation total radiation thermometry total reaction cross section total recovery of associated and coexisting minerals total recursive function

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。