backings

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

果表明，不同背衬对吸声覆盖层吸声性能的影响具有明显不同的特性。

2.Then they are carefully ironed flat.Second, the straw is woven and glued to card board backings according to the different colors and textures.

然后其熨开，编好的草编按不同颜色和质地粘合在木板上。