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 soundinsulation.
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。
2
The laboratory is aimed at measuring the sound absorption and insulation properties of small test pieces in the normal incidence condition.