Besides the complex plywood to be prepared by polyurethane foam taking as the core layer, and also the test measuring analysis had done for the absorbing and sound insulation.

另外，还制备了以聚氨酯泡沫为芯层的复合板材，并对它们的吸隔声性能进行了测试分析。

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Arras since is decorated, also be sound-absorbing layer.

挂毯既是装饰，也是吸音层。

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