然后用另一片硅胶密封压电陶瓷，制作成一种独具韧性的生物相容性材料，其效率是一般柔性压电的四倍。
A second piece of silicone sealsthe PZT in, creating a pliable, biocompatible material that's fourtimes as efficient as previous flexible piezoelectrics.
压电陶瓷换能片，广泛应用于超声波洁牙机。
Piezoelectric ceramic is used widely for ultrasonic tooth cleaner.
能量转换片是由压电陶瓷材料制成的（而不是任何机械振动或电机）。
The transducer is made of piezoelectric ceramic material, it is different from physical vibration and motor vibration.
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