“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	administrative disputes administrative district economy administrative division administrative division of China Administrative Divisions of East Jin and Southern Dynasties Administrative Divisions of Northern Dynasties Administrative Divisions of sixteen States Administrative Divisions of Three States Administrative Divisions of West Jin administrative due process administrative enforcement administrative enforcement action administrative enforcement of health law administrative enforcement of production safety and health administrative entrustment administrative ethics administrative evidence administrative evil administrative examination and approval service platform administrative fee for river project construction and maintenance administrative financial statement analysis administrative geography administrative grade for rural highway administrative guidance administrative handling

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。