About FORTUNKO C M
About National Bureau of Standards, Colorado
About KING R B
About National Bureau of Standards, Colorado
About TAN M
About Stanfoed Univ., California
About Journal of Applied Physics
About ultrasonic test
About Nondestructive testing
About Acoustic transducer and other acoustic equipments
About 低周波
About せん断波
About SH波
About 板材
About 平面欠陥
About 非破壊検査