“关系数据库”概念、定义、翻译-科学时代

单词	关系数据库
释义	测绘学词汇手册关系数据库 relational database
随便看	sample size sample size sample size sample size formula sample sorption sample space sample space sample space sample space sample splitter sample splitting device sample standard deviation sample statistics sample survey sample survey sample survey sample survey sample survey sample survey method sample thinning sample to background activity ratio sample tree sample tube sample unit sample unit

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。