“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	theorem on removable singularities theorem on representability theorem on termwise differentiation theorem on trigonometric series theorem on unique factorization theorem on zeros theorem proving theorem proving analysis theorem拉斯克-诺特分解定理 theorem最大分离最小距离定理 theorem米塔-列夫勒部分分式定理 theoretic theoretical theoretical aerodynamics theoretical analysis Theoretical and Applied Genetics theoretical and computational chemistry theoretical approximation of solutions theoretical arithmetic theoretical astronomy theoretical astrophysics theoretical biology theoretical calculation lag time theoretical capacity Theoretical capacity of waterway

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。