“national time scale primary standard”的概念、定义、翻译、参考文献-科学参考

单词	national time scale primary standard
释义	national time scale primary standard Encyclopedia 工学时标释 national time scale primary standard原子时标国家计量基准 1983年经国家质量监督检验检疫总局批准，由中国计量科学研究院（NIM）国家时间频率计量中心建立和保持的原子时标UTC（NIM）。是统一全国时间频率量值的最高依据。
随便看	grouting machinery grouting machinery for tunnel and underground engineering grouting material grouting material for repairing cracks grouting materials for tunnel and underground engineering grouting method in fractured rock mass grouting methods for tunnel and underground engineering grouting sinking method grouting technology of tunnel and underground engineering grouting test grouting treatment for the well’s flooded Grove-Dike-Fish-Pond Systems Engineering Grove Mountains Grove mountains Grover algorithm Grover's algorithm Grover算法 grow and development appraise grower-finisher pig growing Growing Artificial Societies: Social Science from the Bottom Up growing automaton Growing Pains growing point growing season extension

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。