piezoelectric ceramics压电: piezoelectricity; piezoelect ...陶瓷: pottery and porcelain; ceram ...压电陶瓷环: piezoelectric ceramic ring无铅压电陶瓷: leadless piezoelectric ceramics压电陶瓷材料: piezoceramic material下载手机词典可随时随地查词查翻译