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 acousticspectroscopy.
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。
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A five-storey laboratory wing boasts acoustic Chambers for bat research, an insectarium, LABS for studying ant and bee behaviour, spectroscopy and microscope rooms.