“national certified reference material”的概念、定义、翻译、参考文献-科学参考

单词	national certified reference material
释义	national certified reference material Encyclopedia 工学〔化学计量基本概念〕释 national certified reference material国家标准物质经国家计量行政部门批准，用于统一量值的标准物质。
随便看	public health care system public health emergency public health laboratory sciences Public Health Management public health nutrition public health protection Public health service system public health surveillance public health system public history public hospital public housing public housing policy public information Public Information Graphical Symbols public information resource public institutions accounting Public Interest public interest public interest litigation public interest theory public internet of things public involved on greening publicis group publicitization of sex

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。