“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	severe aplastic anemia Severe Cold severe combined immunodeficiency severe combined immunodeficiency disease severe disability nursing care allowance severe drought in 1972 severe drought in Chenghua period of Ming Dynasty severe drought in Guangxu period of Qing Dynasty severe drought in Sichuan and Chongqing in 2006 severe drought insouthwest China in 2010 severe drought in Tang period of Shang Dynasty severe drought in the middle and lower reaches of Changjiang river in 1978 severe dyspnea severe environment computer severe fever with thrombocytopenia syndrome virus severe fever with thrombocytopenia syndrome virus，SFTS virus severe fever with thrombocytopenia syndrome，SFTS severe nuclear accident severe occupational poisoning accident severe palpitation severe plastic deformation severe restriction severe wind-eroded land Severi Severi divisor

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。