“万国邮政公约”的概念、定义、翻译、参考文献-科学参考

单词	万国邮政公约
释义	万国邮政公约 Universal Convention of Post
随便看	principal portion principal post principal pressure principal problem principal product principal projection property principal proposition principal purlin principal quantum number principal radius of curvature principal rafter principal raw material principal ray principal reactance principal reaction principal reflection principal refraction index principal representation principal river principal road principal root principal rotating motion principal route principal saddle principal search direction

科学参考收录了1248194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。