About MORITA YOSHINORI
About TONODA JUN'ICHI
About 伸晃化学
About NAKAHASHI YUYA
About 石川工業高等専門学校紀要
About ultrasonic wave
About loudspeaker
About strain measurement
About directionality
About acoustic attenuation
About amplitude modulation
About SSB
About AM
About 超音波スピーカ
About Acoustic transducer and other acoustic equipments
About 超音波
About スピーカー
About 歪