“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	natural law natural law school natural levee natural lifetime natural ligands to G quadruplex natural ligands to G-quadruplex natural light natural lighting natural line-broadening natural line width natural line-width natural linewidth natural link function natural logarithm natural logarithm catacaustic natural logic natural logical deduction naturally cone quasi convex function naturally cone quasi-convex function naturally formed naturally induced naturally ordered naturally ordered group naturally ordered groupoid naturally ordered semigroup

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。