“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	rock-plant rock plants rock plasticity rock porgy rock porosity experiment rock proportion experiment rock pyrolysis geochemical logging rock quality designation rock relaxation rock rheological experiment rock rheological model rock rheology rockrose family rock salt rock salt structure rock sample superconducting magnetometer rock sculptures at Dongfo Valley and Qingtong Mountain of Ji’nan City rock sculptures at Longquan Shifo Temple rock sculptures on Kandeng Mountain rock sculptures on Kongwang Mountain rock seepage deformation experiment rockshaft rock shearing strength rock shear strength experiment rock similarity theory

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。