“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	marine sounding equipment marine sound velocity field model marine space utilization marine spatial planning marine special protected area marine species diversity index marine spermatophytes marine standardization management marine storage space marine stratigraphic sounding instrument marine sub-bottom measuring instrument marine sulfur cycle marine survey marine survey information processing system marine surveying and mapping thematic database marine surveying equipment marine survey technology marine synoptic meteorology marine temperate species marine temperature model marine thematic survey marine thermodynamics marine total nitrogen meter marine total phosphorus meter marine tourism

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。