sound absorption slippers

Laying sound absorption slippers under ballastless track is one of main methods to lower air noise for high-speed railway.

铁路无砟轨道铺设吸声板,是高速铁路降低空气噪声的主要措施之一。

An approach is made on technical scheme of developing mineral wool acoustic tile in si-lence series.

探讨了研制静音系列矿棉吸声板的技术方案。

One microperforated panel absorber is presented in this paper,which is used for replacing the old one.

提出一种穿孔吸声板,用于代替原有的吸声板,不仅可以减少材料的厚度,而且可以提高材料的吸声系数加宽吸声频带,以最大限度的提高经济指标,所研究的宽频变腔高阻吸声板经浙江省环保与振动控制专业协会测试,其吸声系数普遍高于普通微穿孔吸声板。