Electromagnetic acoustic transducer(EMAT) Static bias magnetic field Permanent magnet;

电磁超声换能器；静态偏置磁场；永磁体；

The relative separation of the vessel and ROV is measured with an acoustic transducer and transponder.

船舶相对独立定位系统是由一个声学换能器和转发器衡量ROV位置.

Its excellent electromechanical properties are superior to the piezoelectric ceramics. It is suit for the production of the underwater acoustic transducer and ultrasound transducer.

其优异的压电性能大大超过了现有压电陶瓷材料，特别适合于高效率、高灵敏度收发换能器的研制。

This new piezoelectric film is an excellent material for microwave composite resonator and acoustic transducer.

为制作微波复合谐振器和微波声换能器提供了性能优良的新型压电薄膜材料.