fig2

Figure 2. Commercial ultrasonic transducer with (A) stepped (B) conical (C) exponential (D) cubic Bezier and (E) proposed tubular cubic polynomial sonotrodes.
Figure 2. Commercial ultrasonic transducer with (A) stepped (B) conical (C) exponential (D) cubic Bezier and (E) proposed tubular cubic polynomial sonotrodes.
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