“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	socialization of youth socializaton of sexuality socialized decision making socialized information resources management socialized service of agricultural production policy socialized service system for agriculture social judgment social justice Social Justice and the City social knowledge management social law social learning social learning theory social learning theory of aggression social learning theory of personality Social life cycle assessment social loafing social local mobile service Socially Responsible Investing socially shared cognition social man social management Social management function Social management innovation Social Management Method

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。