“二次”概念、定义、翻译-科学时代

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。

单词	二次
释义	数学词汇手册二次 twice
随便看	spatial aggregation spatial analysis spatial analysis spatial analysis spatial analysis spatial arrangement of marine resource exploitation spatial art spatial association spatial attribute spatial autocorrelation spatial autocorrelation spatial automodel spatial average spatial cognition spatial cognition spatial competition spatial competition spatial concentration of sediment spatial configuration spatial configure spatial coordinates spatial coordinates spatial correlation spatial data spatial data