| 单词 | certified reference material | 
| 释义 | certified reference material [`sǝrd·ǝ´fīd `ref·rǝns ¦mǝ`tir·ē·ǝl]  ANALYTICAL CHEMISTRY A reference material, one or more of whose property values are certified by a technically valid procedure, for which a certificate or other documentation has been issued by an appropriate certifying agency.  | 
	
| 随便看 | 
	
  | 
	
科学参考收录了103327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。