“原子时标国家计量基准”的概念、定义、翻译、参考文献-科学参考

单词	原子时标国家计量基准
释义	原子时标国家计量基准 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	groundwater explosion with layer groundwater ex-situ remediation technology ground water flow groundwater flow into foundation pit groundwater flow system groundwater geochemical modeling ground water heat pump groundwater hydraulic gradient groundwater hydraulics groundwater hydrology groundwater in China groundwater in-situ measurement ground water irrigation groundwater irrigation services market groundwater isotopic analysis groundwater level groundwater level and temperature meter groundwater level forecasting groundwater level monitoring groundwater management groundwater management in agricultural irrigation area groundwater management in mining area groundwater management model groundwater management result monitoring groundwater microbial 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。