TANAKA Motoshi | the Mining College, Akita University
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概要
the Mining College, Akita University | 論文
- A Noncontact Thickness Measurement of Thin Samples Using 40 kHz Ultrasonic Wave
- A technique of measuring relative sound velocity changes using a frequency variable type ultrasonic correlation system
- Observation of the sound field in transient radiation from a concave piston source using time-transition pattern
- A method of observing the sound field in transient radiation from a piston source
- Development of a Detector of Variation of Underground Water Level Using Ultrasound : Acoustical Measurements and Instrumentation