JJF 1276-1990 瓦级超声功率基准操作技术规范

瓦级超声功率副基准操作技术规范
Operating Technical Norm of the Secondard Standard for the Ultrasonic Power of Watt Level

毫瓦级超声功率基准操作技术规范
Operating Technical Norm of the Primary Standard for Milliwatt Level Ultrasonic power

毫瓦级超声功率副基准操作技术规范
Operating Technical Norm of the Secondary Standard for the Ultrasonic power of Milliwatt Level

低本底4πα、4πβ活度基准操作技术规范
Operating Technical Norm of 4πa、4πβ Primary Standard for Low-Level Radioactivity

气导听力零级基准操作技术规范
Operating Technical Norm of the Primary Standard for Audiometric Zero Level of Air Conduction

骨导听力零级基准操作技术规范
Operating Technical Norm of the Primary Standard for the Audiometric Zero Level of Bone Conduction

硫酸亚铁剂量计γ射线辐射加工级水吸收剂量基准操作技术规范
Operating Technical Norm of National Metrology Primary Standard of Absorbed Dose in Water for γ-Ray Radiation Processing Level of Ferrous Snlfate Dosimeter