| http://www.w3.org/ns/prov#value | - The probe or transducer of the ultrasonic test equipment is then pressed into contact with the gel on the surface of the part, and is readily moved as by sliding over the gelled surface in any direction necessary for inspection of cracks, flaws, or discontinuities such as part surfaces or interfaces, which may be contained on the surface of the part or within the part.
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