“秒长国家计量基准”的概念、定义、翻译、参考文献-科学参考

单词	秒长国家计量基准
释义	秒长国家计量基准 Encyclopedia 工学频率标准释 national primary frequency standard秒长国家计量基准直接复现秒定义的实验装置。输出的标准频率具有最高计量学特性，作为统一全国秒长量值（频率量值）最高依据的计量器具，全国只有一套。
随便看	North China（continental massif）minerogenetic province North Chinese Phonology North Chinese sounds North Chungcheong Northcliffe Revolution North Dakota State North door of St.Baptist North Duisburg Landscape Park Northeast Agricultural University Northeast area revitalization plan Northeast Army of Volunteers in the Anti-Japanese War Northeast Asia race North-East Atlantic Fisheries Commission northeast China Dagu ballad Northeast China dagu storytelling Northeast China Literature and Art Association Northeast China Tiger and Leopard National Park System Pilot Site northeast Chinese brown frog North-East District Northeast Document Conservation Center northeast dwelling Northeastern China coal occurrence area North Eastern China’s Transect North-Eastern Daily North Eastern Province

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。