“空值数据库”的概念、定义、翻译、参考文献-科学参考

单词	空值数据库
释义	空值数据库 Computer 数据库数据库管理系统及其实现技术释文 null value database空值数据库
随便看	coordinate function coordinate geometry coordinate gradient descent coordinategraph coordinate grid coordinate homeomorphism coordinate hyperplane coordinate hypersurface co-ordinate indexing coordinate line coordinate matching of machining and measurement system coordinate measurement coordinate measurement quantity coordinate measuring instrument coordinate measuring machining coordinate measuring -metrology coordinate measuring technology coordinate method coordinate neighborhood coordinate network coordinate of a point coordinate of a point on earth surface coordinate of a vector coordinate of reference station coordinate of the pole

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。