“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	Real time forecasting real-time forecasting real-time generation of perceptual information in virtual environment real-time holographic interferometry real-time holography real-time interferometry real-time kinematic carrier phase difference technology real-time kinematic positioning real-time kinematic survey real-time laser link real-time measurement real time monitor real-time monitor real-time multimedia real-time network analysis of electric power system real-time observation real-time operating system real-time operation system real-time optimization real-time PCR real-time photogrammetry real-time pricing real-time processing real time release real-time rendering

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。