“双条件式”的概念、定义、翻译、参考文献-科学参考

单词	双条件式
释义	双条件式 Encyclopedia 文学特指性释 biconditional双条件式对于任何命题P、Q而言，P是Q的充分必要条件，P成立时，Q成立；Q成立时，P成立，即P等价于Q的条件式。用符号“↔”表示。又称等值式。
随便看	Ecological Identification Law of the Russian Federation ecological immunology ecological impact on soil ecological imperialism ecological industrial park Ecological industry ecological infrastructure ecological integration ecological integrity of water ecosystem ecological interface design ecological invasion ecological irrigation district ecological isolation ecological landscape fragmentation index ecological liberty ecologically sensitive area ecologically unequal trade ecologically vulnerable zone ecological man ecological management ecological Marxism ecological meteorological disaster ecological migration ecological model ecological monitoring

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。