| http://www.w3.org/ns/prov#value | - In the invention, more particularly for the purpose of reducing or preventing cavitation phenomena resulting from the propagation of ultrasound waves emitted by the ultrasound transducer element 123 in the propagation medium PM1, PM2, signal generator 140 supplies a random or pseudo-random wideband electronic signal, identified by reference A.S. in FIGS. 3 and 4.
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