About WITOS F
About Silesian Technical Univ., Gliwice, POL
About OPILSKI A
About Silesian Technical Univ., Gliwice, POL
About LUTYNSKI A
About Silesian Technical Univ., Gliwice, POL
About Ultrasonics
About amplitude characteristic
About Nondestructive testing
About Conveyers
About 一軸応力
About 採鉱
About 水平移送
About ベルト
About アコースティックエミッション
About 調査