“first day cover”的概念、定义、翻译、参考文献-科学参考

单词	first day cover
释义	first day cover 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	senarmontite senary senate Senate Bill 10 in Oregon Senate of Shaanxi-Gansu-Ningxia Border Region Senator James McMillan Senba Zuru Senbo Senburpur Sendai sendai virus Senda Koreya send documents by delivery post sender sending Sending Law to the Countryside: a Study of China's Grass-roots Judicial System sending voltage senditron Sendov Send Poems to Peng Minwang Send Shen Zuosi from Wang Cangzheng Branch of Shaanxi Wang You Yushi Zhongcheng Send to Wife Wansu sendust Seneca Senegal

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