“null”的概念、定义、翻译、参考文献-科学参考

单词	null
释义	null Physics null①零，零的 ②无效的，无价值的 ③类光[的]^† Mathematics null零的；零 Computer 数据库数据库管理系统及其实现技术释文 null空值
随便看	Chartered Institute of Library and Information Professionals chartered passenger transportation chartered real right chartering market Charter of Ethics for Professional Journalists Charter of Machu Picchu charter of museum member Charter of New Urbanism Charter of the Organization of Central American States charter transport Chartism chart issued chart mapping record file chart mathematical element chart numbering chart object chart of a fiber bundle chart of a manifold chart of marine gravity chart of nuclides chart of nuclides, nuclide chart Chart of the Dharma-world of the Single Vehicle of the Hua-yen chart of the nuclides chart parser chart platemaking

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。