... porous absorption material 多孔吸声材料 porous refractory material 涵义多孔耐火材料 porous overlay material 多孔面层材料 ...
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porous acoustic absorption material 多孔性声吸收材料
Adding a back lining at one side of the porous metal material is an effective and workable way to improve its sound absorption properties.
而在多孔金属材料一侧添加背衬是一种提高吸声性能的有效可行的方法。
The product made of synthetic fiber such as nonwoven web, fabric and carpet as a good porous material will be used in buildings as both ornament and sound absorption material.
合成纤维及其制品(无纺布，纺织品，地毯等)既是高档装饰材料，作为多孔性材料又具有优良的吸声特性。
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