短語(yǔ)詞組短語(yǔ)ultrasonic c flaw detector 超聲波探傷器;超聲探傷儀ultrasonic nondestructive flaw detector 超聲波無(wú)損探傷digital ultrasonic flaw detector 數(shù)字超聲探傷儀Ultrasonic Flaw Detector for Rail 鋼軌超聲波探傷儀檢定槼程a -mode ultrsonic flw detector 型超探儀 返回 ultrasonic flaw detector