“一级标准--原始标准”概念、定义、翻译-科学时代

单词	一级标准--原始标准
释义	经济学词汇手册 primary standard 原始标准，一级标准
随便看	medium-height trestle medium infrared camouflage medium-intensity war Medium-Length Āgama medium-level attack medium level programming language medium level waste medium-lift booster medium line medium line medium loam medium loam medium long shot medium-low regulator medium-medium regulator medium mesh medium mortar medium of circulation medium of exchange medium of instruction medium of instruction medium of redemption medium patent medium persistence phosphor medium power reactor

科学时代收录了1160609条科普词条，基本涵盖了常见科普常识及英语词汇的翻译，是科学学习和研究的有利工具。

primary standard