有证参考物质；有证参考材料 certified reference material(CRM) 有证参考标准 certified reference standard 有证参考标准 certified reference standard ..
基于4个网页-相关网页
·2,447,543篇论文数据，部分数据来源于NoteExpress
The certified value of the standard reference material developed is accurate and reliable, and is approved as the national matter standard sample.
所研制的标准物质定值准确可靠，已被定为国家实物标准样品。
youdao
应用推荐
模块上移
模块下移
不移动