Pieds皮耶pien.馅饼；饼图n.喜鹊；爱说话的人(=magpie)piezoelectricity act uator压电致动器piezoelectric immunoseneor压电免疫传感器piezoelectric crystal unit压电晶体piezoelectric lithotripter压电晶体碎石机piezocone penetration test孔压静力触探piezoelectric performa nce压电性能piezoelectric cock igniter压电式旋塞阀点火器piezoceramics linear motor压电陶瓷直线电机piezoelectric strain gauge压电应变计piezoelectric quartz plate压电石英片