“首日封”的概念、定义、翻译、参考文献-科学参考

单词	首日封
释义	首日封 Encyclopedia 工学集邮品释 first day cover首日封在新邮票发行首日，将该套邮票的全套或单枚贴在特制信封、普通信封或纪念信封的右上角，加盖当日邮政日戳或特制的首日纪念邮戳的信封。
随便看	development of trachea development of trunk muscles development of urinary system development of vertebral column development operation development ore reserve development-oriented poverty alleviation Development Pattern of Tourism Industry development planning assessment Development Planning for a New Generation of Artificial Intelligence development(plant) development pole development program for oilfield Development Research Center of the Ministry of Water Resources of P. R. China Development Research Center of the State Council Development Research Center of the State Council of the People's Republic of China development speed with fixed basis development speed with link-relative method development stages of group work development strategies on agricultural science and technology development strategy of Yangtze River economic belt Development Study Cente of Venezuela development system choice in open-pit mine development theorem deverbalization

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。