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

单词	primary reference material
释义	primary reference material Encyclopedia 工学〔化学计量基本概念〕释 primary reference material基准标准物质在化学测量领域中用作原级（基准）测量标准的物质。是化学测量溯源体系的顶层物质基础，也是有证标准物质的最高等级。 Chemistry ＞分析化学＞标准物质＞释义 primary reference material基准物质＞分析化学＞标准物质＞释义 primary reference material一级标准物质
随便看	conversion of coordinates conversion of corporate bonds conversion of criminal proof burden conversion of cropland to forest and grassland conversion of degraded farmland into grassland conversion of degraded grazing-land into grassland conversion of electronic records conversion of heavy aromatics to light aromatics conversion of nuclear fuel conversion of part of speech conversion of time conversion period conversion price conversion principle of electromagnetic mechanical energy conversion processing of airborne radioactive measurement data conversion rate conversion ratio conversion spectrum conversion table conversion transconductance convert county into city converter converter controlled circuit converter fume and dust converter gas

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。