“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	chemical corrosion chemical corrosion-proof electric apparatus chemical crosslink chemical crosslinking chemical cycle of carbon chemical cycle of nitrogen chemical cycle of phosphorus chemical cycle of sulfur chemical database chemical decanning chemical decladding chemical decladding; chemical decanning chemical decontamination chemical defense chemical defense of insect chemical degradation chemical degradation of polymers chemical deodorant method of sediment chemical diffusion chemical digestion chemical diversity synthesis chemical doping white light-emitting polymer chemical dosimeter chemical dynamics chemical dynamics of aquatic system

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。