“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	Systeme Preparatoire Infra-Rouge Pour Alerte satellite system equivalence system error system estimation system evaluation system evolution system expandability system failure of power system system fault diagnosis system fault tolerance system fault tolerance, SFT system feasibility system feedback system flow diagram system flux system follow-up system for buildings with animals system for buildings with plants system for stockpiling reserves of major commodities system for the review of constitutionality system function system generated electromagnetic pulse system generation system ground system hazard analysis

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。