电致伸缩系数 meaning in English

electrostriction coefficient
electrostrictive coefficient

Relaxor ferroelectric single crystals , such as pb ( mg1 / 3nb2 / 3 ) - pbtio3 ( abbreviated as pmnt ) or pb ( zn1 / 3nb2 / 3 ) - pbtio3 ( abbreviated as pznt ) , have been reported to exhibit an extremely large piezoelectric constant and excellent electrostrictive properties . such excellent performance makes it fully substitute the traditional piezoelectric ceramics and points to a revolution in ultrasonic transducers , actuators and micro - positioners , making relaxor - based piezocrystals the most promising materials for a broad range of advanced applications . however , it is difficult to grow the high quality single crystals because of the lack of valid thermodynamic data
新型弛豫铁电单晶铌镁酸铅(简称pmnt )或铌锌酸铅(简称pznt )是一类新兴的功能材料，其在准同型相界附近具有优于传统压电陶瓷的较高的压电常数和电致伸缩系数，可完全代替传统的压电陶瓷作为超声换能器、致动器、微位移器等，使其成为铁电领域的研究热点，但如何生长出满足应用要求的单晶材料却一直是一个困扰的问题。