“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	direct exchange interaction direct expansion method direct-expansion refrigeration direct expense coefficient direct extrusion direct factor direct feeding system of electric traction direct fermentation direct finance direct financial payment direct-fired agriculture and forestry biomass for cogeneration of heat and power direct fission yield direct flotation direct flow direct force/aerodynamic blended control direct force control direct formic acid fuel cell direct formic acid fuel cell, DFAFC direct-gap semiconductor direct georeferencing direct glare direct government regulation direct H2O2 fuel cell direct homothety direct hydrazine fuel cell

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。