“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	union of graphs Union of Guinea-Ghana Union of Journalists of the USSR Union of Krewo Union of Lublin union of mappings union of operators union of orbits Union of Orthodox Jewish Congregation of America Union of Orthodox Rabbis of the United States and Canada union of projections union of sets union of simplices union of spaces union of spheres union of subgroups union of surface elements Union of the Peoples of Cameroon Union of the Peoples of the Cape Verde Islands union of words union operation union operator union problem Union progressiste mauritanienne Union Road workers Village

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。