变幅比 meaning in English

ratio of ranges

The mechanical impedance analyzing method utilized , the mathematical formula for the input impedance and transformer ratio of ultrasonic horn are built up , some vibration performance of ultrasonic horns are discussed under different load impedance , the relationship and applicational conditions between the transformer ratio of ultrasonic horn and the radiational impedance are analyzed
采用机械阻抗分析方法，建立了超声变幅器的输入阻抗和变幅比的数学表达式，讨论了不同负载阻抗下超声变幅器的振动性能，分析了超声变幅器的变幅比与换能器辐射阻抗之间的关系及应用条件。