计量学是研究一切有关测量的理论和实践问题的科学。其中包括研究确定计量单位和单位制、计量单位的复现方法建立基准标准体系、量值传递和溯源方法、误差理论及测量结果的质量保证。计量是通过实现单位统一、量值准确可靠来为现代化科学服务的。因此，计量科学技术既是基础科 Metrology is a science that studies all theoretical and practical questions about measurement. Including research to determine the unit of measurement and the unit system, unit of measurement method of re-establishing the benchmarking system, the value of the transfer and traceability methods, error theory and measurement results of the quality assurance. Measurement is to achieve the unity of the unit, the amount of accurate and reliable to serve the modernization of science. Therefore, measurement science and technology are both basic subjects