About ROSE J L
About Pennsylvania State Univ., PA, USA
About PELTS S P
About Pennsylvania State Univ., PA, USA
About QUARRY M J
About Pennsylvania State Univ., PA, USA
About Ultrasonics
About ultrasonic test
About Acoustic transducer and other acoustic equipments
About Nondestructive testing
About 導波
About NDE
About くし形
About トランスデューサ
About モデル