The aim was to research the sound absorption properties of graded polyurethanes at incident angles.

主要研究梯度聚氨酯在全入射角下的吸声性能.

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Its good characteristics include low cost, high durability and good property of sound absorption.

它具有成本低 、 耐久性高、吸声性能好的特点.

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It features temperature resistance, good insulation, sound absorption and high cleaning efficiency of exhaust gas.

具有耐热温度高 、 保温性能好、吸音率大、尾气净化效率高的特点,是理想的空气净化 、 隔热、保温材料.

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Surface impedance is one of the key factors affecting the sound absorption features of materials.

吸声材料的表面阻抗是影响材料吸声性能的主要因素之一,受到材料的特征阻抗和厚度的影响.

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It indicates that straw - based wallboard has characteristics of low density, good heat insulation and sound absorption.

笔者综述了3种墙体材料生产工艺 、 产品性能及其用途的研究现状和发展趋势.

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The sound absorption coefficient of the material was tested by standing wave tube method.

采用驻波管法测试材料的吸声系数.

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An adaptive control approach applied to practical active sound absorption systems is presented.

研究了实际系统中有源声吸收自适应控制方案.

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At given porosity, the effect of cell shape on sound absorption is small.

在考虑孔隙度, 影响细胞的形状对吸声是小.

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XPE foams exhibit exhibit excellent insulating qualities, sound absorption. and resistance to chemicals and weather.

XPE具有优良的保温 、 吸音、耐化学及耐气候性能.

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Now a day , many sound absorption material is designed to have decorative function.

吸声材料正在朝着装饰性方向发展.

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New sound absorption materials are being steadily put to the toto the environment protection industry.

本公司将不断推出新型吸声材料,发展环保产业.

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