“空集合”的概念、定义、翻译、参考文献-科学参考

科学参考收录了1248194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。

单词	空集合
释义	空集合 null set
随便看	research effort research engineer researcher researches research expenditure research facility research fellow research findings research funds research grant research idea research information service research in growth chamber and field research in man's development in an all-round way research institute research institute of chemical machinery research institute of nutrition research instrument researchist research laboratory research man research master blueprint research microscope research octane research on educational sociology