“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	helium-cadmium laser helium content helium core helium detonation helium era Helium flash helium flash helium ion beam scanning electron microscope helium ionization detector helium ionization zone helium isotope hydrogeology helium-jet transport helium leak detector helium liquefier helium Lyman α forest helium main-sequence helium method helium-neon helium-neon laser helium optical pumping magnetometer helium-poor star helium production helium refrigerator helium-rich core helium-rich star

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。