The results show that the variation of static hydraulic pressure does not significantly affect the deformation and sound absorption performance of the structure with compound cavum.
应用有限元方法计算静水压力变化下几种橡胶吸声结构的形变和吸声性能。
The changes of the transfer functions of reflected sound waves were analysed in the case of absorption structure with ribs.
文中还分析了有肋吸声结构声反射传递函数的变化。
In applied acoustics field, the sound absorption measurement of an acoustic material and structure is always an important and basic task.
在应用声学领域，声学材料与结构的吸声测量始终是一项重要的工作。
We applied the finite element method to study the variation of sound absorption structure and performance of rubber material under variable hydraulic pressure.
应用有限元方法计算静水压力变化下几种橡胶吸声结构的形变和吸声性能。
Based on the sound absorption mechanism of Helmholtz Resonator, the advantage of soft tube length is fully used in the new structure, and thus the low-frequency noise can be controled easily.
提出了一种新型的宽频带共振吸声结构，该结构基于赫姆霍兹共振吸声机理，并充分利用了软管在长度上的优势，易于实现对低频噪声的控制。
Study on sound absorption and insulation of gypsum board structure and its application;
应用有限元方法计算静水压力变化下几种橡胶吸声结构的形变和吸声性能。
An improved back structure is proposed according to the principle of sound absorption. sound insulation and damping vibration. It can lower inner noise so as to meet the state standard.
根据吸声、隔声和阻尼减振原理，对某型双层客车后部结构提出了改进措施，使其车内噪声达到了国家规定。
The structure of the sound-absorption material increases the contact area with the sound wave, thereby having better sound-absorption effect.
吸音材料的结 构使得它与声波的接触面积增大，具有更好的吸音效果。
The structure of the sound-absorption material increases the contact area with the sound wave, thereby having better sound-absorption effect.
吸音材料的结 构使得它与声波的接触面积增大，具有更好的吸音效果。
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