“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	mean fiber length mean fictitious clock mean field mean field approach mean field approximation mean field game mean field theory mean-field theory mean field theory in nuclear physics mean-flux method mean free collision time mean free path mean free path of electrons mean free path of gas molecules mean free path 平均自由程 mean free time mean function mean functional mean geodesic curvature mean grade of ore district mean grain size mean high water springs meaning Meaning Driven Multidimensional Definition Theory Meaning Explanation and Sound Clarification of Analytical Dictionary of Characters

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。