“关系代数”的概念、定义、翻译、参考文献-科学参考

单词	关系代数
释义	关系代数 Encyclopedia 理学数据库系统释 relational algebra关系代数一种抽象的关系数据语言，它通过对关系的运算来表达查询。 Mathematics algebra of relations关系代数 relation algebra关系代数 relational algebra关系代数 relationship algebra关系代数 Computer 数据库数据库理论释文 relational algebra关系代数
随便看	child health care childhood abuse childhood abuse of offender Childhood and Society childhood autism childhood diarrhea disease childhood disintegrative disorder childhood nutritional anemia Childhood Trauma Questionnaire child injury prevention child labour Child Literacy book by Deng Wenyuan child neglect child oral health care Child play child psychology Children children children abdominal pain children accidental injury children adoption children affected by AIDS children depression Children Education of Museum:Double Vision of Exhibitions and Educational Programs for Children children exhibition

科学参考收录了854744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。