“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	EMRS EMS EMSA E. M. Stein E. M. Stein (1931—) EMT e.m.u. emu EMU/DMU maintenance and repair Emuer River emulated data emulation emulator emulsifiable concentrates emulsification emulsification in-liquid drying method emulsification-solvent evaporation method emulsified asphalt recycling machine emulsified asphalt slurry mixtures emulsified-asphalt specialized for high-speed railway emulsified bitumen emulsified fuels emulsifier emulsifier free emulsion polymerization emulsifier-free emulsion polymerization

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。