Acoustic Emission Testing - 1
28:57
Acoustic Emission Testing - 2
30:24
Ultrasonic testing -1
4:00
Acoustic Emission Monitoring
36:35
Magnetic particle testing - 1
29:53
Thermographic Nondestructive Testing
3:25:28
50 obras-primas da música clássica para relaxamento e alma | Beethoven, Mozart, Chopin, Bach, Vivald
17:04
Acoustic Emission Testing, aet, ndt, (English version), non destructive testing, with Animation
31:07