The sound insulation property of aluminum foam(Al-foam) with composite structure was studied using a self-made equipment and sound detector.
采用自制的试验装置对泡沫铝与实体铝复合结构的隔声性能作了研究。
In this paper, the author puts out a method for testing textile material sound insulation property which can re-move noise disturbance and designs a measurement system.
本文作者提出一个能消除噪声干扰的纺织材料隔声性能测试方法。
Presently, silica aerogels are the lightest solid material which have the best property in thermal insulation and have the higher porosity, the lower sound velocities in the world.
目前硅气凝胶是世界上最轻、隔热性最好、孔隙率较高且声传播速率较低的固体材料，由于其特殊的网络结构使其具有很多独特的性能。
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