About MURAYAMA RIICHI
About nondestructive inspection
About structure (construction)
About high temperature
About ultrasonic wave
About sample
About circular cone
About guided wave
About basic structure
About inspection system
About ultrasonic sensor
About ultrasonic beam
About long distance transmission
About Nondestructive testing
About 超音波センサ
About 長距離
About 導波
About 構造物
About 非破壊検査