“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	complete operator complete ordered field complete ordering complete oriented graph complete orthogonal sequence complete orthogonal set complete orthogonal system complete orthonormal eigenbasis complete orthonormal sequence complete orthonormal set complete orthonormal system complete partial order complete partial order, CPO complete path complete pedigree mating design Complete Perfection according to Chongyang complete permutation complete pivot complete pivoting Complete Poetry Works of Five Dynasties Complete Poetry Works of Han, Three Kingdoms, Jin, Northern and Southern Dynasties Complete Poetry Works of Jin Dynasty Complete Poetry Works of Jin Dynasty and Yuan Dynasty Complete Poetry Works of Song Dynasty Complete Poetry Works of Tang Dynasty

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。