“national prototype of the kilogram”的概念、定义、翻译、参考文献-科学参考

单词	national prototype of the kilogram
释义	national prototype of the kilogram Encyclopedia 工学质量计量技术释 national prototype of the kilogram1千克质量基准砝码中国在1965年从国际计量局得到砝码器号是60号的国家千克原器。
随便看	information encryption information engineering information engineering facility information engineering facility, IEF information engineering method information entropy information entropy metamaterials information environment information estimation information ethics information evaluation information evaluation analysis tool information evolution theory information exchange information exchange mode information exchange service information exclusion information experiment information explosion information expressway information extraction information extraction system information extraction system, IES information fairness information family

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。