“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	inorganic nanomaterials inorganic nanoparticle-based vector inorganic new energy materials inorganic non-metallic materials inorganic nonmetallic materials technology inorganic nonmetallic reinforcements inorganic nutrition inorganic organic hybrid composites inorganic origin theory of petroleum inorganic phase change materials inorganic pigment inorganic pollutant inorganic pollution of water body inorganic polymer inorganic polymer matrix composites inorganic polyporate material inorganic preparation inorganic salt inorganic salt industry inorganic scintillator inorganic supermolecule materials inorganic surface modification inorganic syntheses inorganic synthesis inorganic thermal storage material

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。