“negation”的概念、定义、翻译、参考文献-科学参考

单词	negation
释义	negation [nǝ`gā·shǝn] ^MATHEMATICS The negation of a proposition P is a proposition which is true if and only if P is false; this is often written ~ P. f ¹
随便看	drum feeder drum filter drum gate drumlin drumlinoid drum mark drum memory drum meter drummy drum parity error drum plotter drum printer drum printing drum recorder drum separator drum storage drum switch drum transmitter drum trap drum-type boiler drum winding drupaceous drupe drupelet druse

科学参考收录了103327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。