- Frequency is the most accuracy measurement quantity in the nature.
- The technology of high accuracy measurement using laser beam as a straight datum II.
- In order to accuracy measurement data,the process of measurement must be controlled.
- The time variable measurement of high distinguishability is one of key technology in magnetostrictive liquid level sensor in order to realize high accuracy measurement.
- The source-based radiometry is a traditional method with poor accuracy compared to detector-based radiometry owing to the difficulty of high accuracy measurement of blackbody temperature.