“national time scale primary standard”的概念、定义、翻译、参考文献-科学参考

单词	national time scale primary standard
释义	national time scale primary standard Encyclopedia 工学时标释 national time scale primary standard原子时标国家计量基准 1983年经国家质量监督检验检疫总局批准，由中国计量科学研究院（NIM）国家时间频率计量中心建立和保持的原子时标UTC（NIM）。是统一全国时间频率量值的最高依据。
随便看	Through a Glass Darkly through-air thermal bonding Through-back Boxing through casing resistivity logging device throughflow through-focus image through-hardening through-hole coating through-illumination through line of the action in the whole play throughput throughput capacity throughput-intensive application through site selection to build the emperor's recreation and hunting places through the back of paradox Through The Lens Flash Through the Looking-Glass, and What Alice Found There Through Thick and Thin through-tubing perforation through-vane through-wall radar throw thrower throwing-firewood-hole throwing index

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。