Ultrasonic testing
noun
1.
(engineering) the scanning of material with an ultrasonic beam, during which reflections from faults in the material can be detected: a powerful nondestructive test method
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noun 1. Physics. sound with a frequency greater than 20,000 Hz, approximately the upper limit of human hearing. 2. Medicine/Medical. the application of ultrasonic waves to therapy or diagnostics, as in deep-heat treatment of a joint or imaging of internal structures. noun 1. ultrasonic waves at frequencies above the audible range (above about 20 kHz), […]
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