“黑便士”的概念、定义、翻译、参考文献-科学参考

单词	黑便士
释义	黑便士 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	leadership leadership activities leadership development leadership development strategy leadership development technology leadership mentor program leadership of mega projects leadership science leadership style leadership theory leaders of Xiaogang Village's Big Contract leader stroke leader style lead flash smelting process lead foil lead frame materials lead free gasoline lead-free gasoline lead-free piezoelectric ceramic lead-free solder lead-free soldering lead glass lead glazing lead grid lead grill

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。