“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	soil fertility soil fertility grading soil fertility system soil firmness soil flushing soil food web soil forest landscape soil formation processes in China soil-forming weathering crust soil-free turf soil freeze-thaw erosion soil freezing - thawing erosion in China soil fungi soil genesis soil genetic classification soil geography soil geography of China soil grain size analysis soil gravitational water soil health soil heat balance soil heat flux density soil heat flux measurement soil heat status soil heavy metal acquisition

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。