对扬声器的非线性分谐波的测量分析表明，扬声器薄壳分谐波的产生源于扬声器薄壳模态的相互作用。
The measurement results and analyses shows that the sub-harmonics in, loudspeaker shell are caused by the interaction of vibration modes.
第1章回顾了扬声器和旋转薄壳在转点频段的线性和非线性振动，发现旋转薄壳转点问题中尚有若干问题有待进一步研究。
An overview of the research conducted in the area of linear and nonlinear vibrations in the turning-point frequency range of loudspeakers and revolution shells is given in chapter 1.
第1章回顾了扬声器和旋转薄壳在转点频段的线性和非线性振动，发现旋转薄壳转点问题中尚有若干问题有待进一步研究。
An overview of the research conducted in the area of linear and nonlinear vibrations in the turning-point frequency range of loudspeakers and revolution shells is given in chapter 1.
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