“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	one to one mapping one-to-one mapping one-to-oneness one-to-one relation one-to-one representation one trait selection O. Neugebauer O. Neugebauer (1899—1990) one-unit maintainable system one-valued one-valued branch one-valued function one-valued mapping one-variable calculus One Village One Product one vote veto system one-way analysis of variance one-way channel one-way classification one-way classification model one-way Doppler one way function one-way function one-way function conjecture one-way hash function

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。