“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	symmetrized tensor symmetrizer symmetroid symmetry symmetry-adapted coefficient symmetry adapted linear combination symmetry adapted linear combination, SALC symmetry adapted molecular orbital symmetry-adapted wave function symmetry analysis symmetry and algebra in conformal field theory symmetry and asymmetry symmetry and balance symmetry and conserved current symmetry and conserved quantity symmetry axiom symmetry breaking symmetry breaking technique symmetry-broken symmetry class symmetry classification symmetry condition symmetry element symmetry elements symmetry energy

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。