“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	primary and secondary primary and secondary equilibrium primary and secondary school buildings primary and secondary school teacher employment system primary and secondary school teacher flow system primary and secondary school teachers' training system primary antenna Primary Atmosphere hypothesis primary auditory cortex primary basin primary battery primary B cell deficiency primary beam primary biliary cirrhosis primary body primary bronchopulonary carcinoma primary bronchus primary cell primary cell culture primary cells control primary cell wall primary cementing primary central nervous system lymphoma primary cerebral vesicle primary ciliary dyskinesia

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。