"piezoelectric transducer" . . "piezoelectric devices" . "piezoelectric actuator" . "piezo actuators" . . . . . "Piezo" . . "piezoelectrical" . "piezoelectric ceramics" . . "piezoelectric gems" . "a piezoelectric effect" . . . "piezo-electrically" . "piezoelectric" . "crystal electricity" . "Converse Piezoelectric Effect" . "stress on a crystal" . "peizoelectric" . "piezoelectrics" . "Piezoelectric spotting" . "Piezoceramics" . "piezoelectric motor" . . "piezoceramics" . . . "piezo" . "reverse piezoelectric" . "Piezoelectricity#Potential_applications" . "Piezoelectric devices" . "piezoelectric transformer" . . "piezoelectric actuators" . "piezoelectric effect" . . . "piezoelectric speaker" . "piezo crystal" . . . . . "electrostrain" . "poled" . "piezoelectrically" . "Piezo-electric" . "piezoelectric crystal" . "piezoelectric material" . . "piezo-transducer" . "Converse piezoelectric effect" . . "piezo\u2013electrically" . . "Piezoelectric actuators" . "Piezoelectricity" . "piezoelectric principle" . . . . "piezocrystal" . "Direct Piezoelectric Effect" . . . . "Piezoelectric generator" . . . "piezoelectric-type" . "piezoelectric behaviour" . "piezoelectric element" . "piezo-electric effect" . . "piezo-electric" . . . . "Piezoelectric" . . "converse piezoelectric" . "piezoelectricity" . . "Piezoelectric scanning" . "Piezoceramic" . "piezoelectric crystals" . "piezoelectric materials" . . . "piezos" . "Piezoelectricity" . . "piezoceramic" . . . . . . "Piezoelectricity#Mechanism" . . "Piezoelectric crystals" . .