Industrial nondestructive detector and night-vision device for military and civil .
工业无损检测设备和军警民用夜视器材。
Measurements with ultrasonic gauges are nondestructive , accurate and dependable .
超声波探伤仪测量是非破坏性的，精确的，可靠的。
Abstract : modern signal processing and pattern recognition have been playing an increasing important role in ultrasonic nondestructive testing and evaluation .
文摘：现代信号处理与模式识别技术在超声无损检测与评价中的作用愈来愈重要。
Abstract : several qualification and certification programs for ndtpersonnel developed by american society for nondestructive testing are described . The characteristics of employer-based certification systems and central certification systems are emphatically analyzed .
