“空集”概念、定义、翻译-科学时代

单词	空集
释义	数学词汇手册空集 empty set；null set；void set
随便看	over-the-counter (OTC) over-the-counter (OTC) over-the-counter--over-the-counter (OTC) over-the-counter--over-the-counter (OTC) over-the-counter--over-the-counter（OTC） over-the-counter rate over-the-counter sale over-the-counter sale over-the-counter sale over-the-counter trading over-the-counter trading over-the-counter（OTC） over-the-horizon Over There Theatre League over-the-shoulder overthrust overthrust overtide overtide overtime overtime overtime overtime overtime allowance overtime allowance

科学时代收录了1160609条科普词条，基本涵盖了常见科普常识及英语词汇的翻译，是科学学习和研究的有利工具。