“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	sensitizer sensitogram sensitometer sensitometric sensitometric characteristic sensitometry sensor sensor alert service sensor alignment sensor amplifier sensor array sensor biomimetics sensor classification sensor composition sensor data access sensor detection technology sensor event service sensor fault sensorimotor area sensorineural hearing loss sensorless condition monitoring sensor material sensor network sensor network database sensor networks

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。