In this paper, the problem of the acoustic resonant frequency shift of a cylindrical cavity with a coaxial porous sample is discussed on the basis of the resonance acoustic spectroscopy.
基于共振声谱法，研究了同轴孔隙性圆柱扰动体引起圆柱谐振腔共振频率的偏移。
The output current is operated at low-frequency square to prevent the acoustic resonance for MH lamps.
负载侧输出为低频方波电流，有效克服了MH灯声共振现象。
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