“当且仅当”的概念、定义、翻译、参考文献-科学参考

单词	当且仅当
释义	当且仅当 Mathematics exactly when当且仅当 if and only if当且仅当^† iff当且仅当^† just if当且仅当 then and only then当且仅当 when and only when当且仅当
随便看	odd graph odd group odd half-integer odd half-spinor odd half-spin representation Odd Hassel odd integer odd-multiple oddness odd node odd number odd-numbered monthly selection odd number theorem odd-number theorem odd -odd nucleus odd odd nucleus odd-odd nucleus odd order theorem odd oval odd parity odd-parity odd part odd-particle isomerism odd perfect number odd permutation

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。