吸声

The results show that the influences of various backings on the acoustic characteristics of anechoic coating are obviously different.

结果表明，不同背衬对吸覆盖层吸影响具有明显不同特。

And then on to Katherine,sitting desolately,no sign of life except for her shallow breathing.

然后去凯瑟琳屋，她垂头丧气地坐着，除了浅弱呼吸外，没有一点生机。

According to acoustic structure theory base,acoustic principle of multi-holes acoustextile and nonwovens characteristics,nonwovens acoustic theory are analysed in the paper.

根据吸结构理论基础以及多孔吸材料吸机理,结合非结构特点,系统分析了非吸原理。