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Prüfung
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Ultrasonic equipment for metal flaw detection
Magnetic and penetrant methods of non-destructive testing
Because it's tested, millions travel safely -- H
Results of tests on Portland cement of recent production
Fluoroscopic inspection provides rapid check of aircraft alloy castings
Economics of materials testing by automobile manufacturer
Destructive and non-destructive testing
Methods of testing the insulation and resistance of street railway lines
Amsler dynamometer and inspection car