“Penny Black Stamp”的概念、定义、翻译、参考文献-科学参考

单词	Penny Black Stamp
释义	Penny Black Stamp Encyclopedia 工学邮资凭证释 Penny Black Stamp黑便士 1840年英国发行的世界上第一枚邮票。5月1日发售，5月6日正式使用。面值为1便士，用黑色油墨印制。
随便看	serial scheduling serial scheme serial subgroup serial synapse serial task serial test serial test of animal diseases serial time serial time-encoded amplified microscopy，STEAM serial transmission sericin sericin loss percentage of cocoon shell sericin powder sericite sericterium Sericultural School sericulture meteorology Sericulture Rituals Serie A Series series series and parallel of the power electronic device series approaching no limit series bias Series by the Mass Education Society

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。