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A circular wideband ultrasonic transducer has been developed by multi-resonance theory.
利用多共振原理设计一种圆形宽带超声换能器。
It is mainly composed of a PZT plate acting as an oscillator and a curved back liner in order to make the system a state of multi-resonance.
它以通常的平板圆形压电晶片作为换能器振子，加上曲面背衬使整个系统达到多共振状态。
It gives two kinds of new utility engineering concepts called resonance transmission chain and multi hole throttle law of shock absorber.
提出了减振器共振传递链和减振器多孔截流律等工程实用概念。
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