acoustical insulation

thermal and acoustical insulation (glass fiber, duct lining material)

绝热和隔音材料（玻璃纤维和管道衬里材料）

in italy, there are now two legislative apparatus that impose a certain degree of thermal and acoustical insulation.

在意大利，目前有两种法定的工具来规范隔声和隔热。

spray-applied mineral fiber thermal or acoustical insulation

喷施的矿质纤维绝热或隔音材料

This paper discussed the practical significance of developing fibers and nonwovens composite material for acoustical absorption and sound insulation, introduced simply the application of fibers ( vegetable fiber, inorganic fiber synthetic fiber metal fiber) and nonwovens composite material in noise-reducing.

简介几类纺织纤维（植物纤维、无机纤维、合成纤维、金属纤维）及其非织造布复合材料在降噪领域的应用，说明了开发吸声隔音用纺织纤维与非织造布复合材料的现实意义。