Finally, an asymmetrical multi-frequency transducer is designed, the resonant frequency of transducer is obtained, that is, This type of transducer can be used in ultrasonic cleaning and other fields.
另外还设计了一种非对称的多频纵振动换能器，其共振频率方程为：这种类型的多频纵振动换能器可以应用到超声清洗中。
The present paper reviews the research progress and widespread utilization of loofah sponges in medicine, daily household cleaning, health products and other fields.
综述了丝瓜络在医药、日用洗涤用品、保健制品及其他领域的研究进展及综合利用现状。
The present paper reviews the research progress and widespread utilization of loofah sponges in medicine, daily household cleaning, health products and other fields.
综述了丝瓜络在医药、日用洗涤用品、保健制品及其他领域的研究进展及综合利用现状。
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