“philately commemorative postmark”的概念、定义、翻译、参考文献-科学参考

单词	philately commemorative postmark
释义	philately commemorative postmark Encyclopedia 工学集邮品释 philately commemorative postmark集邮纪念戳为纪念与集邮目的而刻制使用的专门戳记。包含两类性质完全不同的戳与章：一类是纪念邮戳，一类是纪念印章。
随便看	change detection changed tone change dump change fluid flowing direction change from rural to non-rural residence registration change in accounting estimates change in accounting policy change in a function change in an argument change inner nature then rise the moral actions change in progress change in sign change in the end change management system Chang'e mythology change of a basis change of base functor change of base of logarithms change of bases change of coordinates change of drift change of forest right system in China change of keys change of land rights change of litigants

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。