The data he compiled yielded a mathematical formula for the relationship between a room's echo duration, its quantity and quality of sound-absorbing materials, and its spatial volume.
他收集的数据得出了一个关于房间回声持续时间、吸音材料的数量和质量以及空间体积之间关系的数学公式。
It is an important way with the sound-absorbing materials to improve the sound pollution.
利用吸声材料来吸声降噪是治理噪声污染的重要途径之一。
Therefore, to choose those seen in the decoration noise, sound-absorbing effect good decoration materials.
这看起来不错，却不能起到隔音的效果。
The development of non-woven sound-absorbing materials, which have better sound absorption properties, can replace wooden materials, inorganic fiber materials currently in use.
开发非织造吸声材料，可以替代目前正在使用的木质材料、无机纤维材料等等，得到吸声性能更优的产品。
Therefore, the study on non-woven sound-absorbing materials has great significance.
因此研究非织造吸声材料具有非常重大的意义。
The sound-absorbing coefficients of 14 typical fiber Materials with different geometrical cros-section forms and sizes are measured and studied.
测试研究了有代表性的14种不同材质、不同截面几何形状及尺寸大小的纤维材料；
Therefore the porous sound-absorbing properties of metal materials is receiving increasing attention.
因此多孔金属材料的吸声性能越来越受到人们的关注。
The silk fiber as interior decoration materials, not only can rise to sound-absorbing, vacuuming, heat preservation effect, and play a flame retardant function.
采用蚕丝纤维作为室内装饰的原料，不但可以起到吸音、吸尘、保温作用，还有起到阻燃功能。
The silk fiber as interior decoration materials, not only can rise to sound-absorbing, dust collection, heat preservation effect, and play a flame retardant function.
采用蚕丝纤维作为室内装饰的原料，不但可以起到吸音、吸尘、保温作用，还有起到阻燃功能。
The open-cell foamed products are used as adsorption substrates and adsorption carriers, and can also be used as sound-insulating, sound-absorbing, and heat-insulating materials.
开孔发泡制品用作吸附基材和吸附载体，也可作为隔音、吸音、隔热材料。
The open-cell foamed products are used as adsorption substrates and adsorption carriers, and can also be used as sound-insulating, sound-absorbing, and heat-insulating materials.
开孔发泡制品用作吸附基材和吸附载体，也可作为隔音、吸音、隔热材料。
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