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thermocouple,piezoelectric transducer,photoelectric transducer.
thermocouple, photoelectric transducer, photovoltaic cell, piezoelectric transducer
It's peak frequency
A. S. DeReggi has written:
'Piezoelectric polymer transducer for dynamic pressure measurements' -- subject(s): Piezoelectric transducers
the transducer and the data processing unit. The transducer both produces the sound waves that penetrate the body and receives the reflected echoes. Transducers are built around piezoelectric ceramic chips.