采用前驱体微球法制备闭孔聚酰亚胺泡沫，并对其吸声性能进行了研究。
The closed cell polyimide foams were fabricated by foaming the precursor balloons, and the foams' acoustic absorption properties were tested.
采用前驱体微球法制备闭孔聚酰亚胺泡沫，并对其吸声性能进行了研究。
The closed cell polyimide foams were fabricated by foaming the precursor balloons, and the foams' acoustic absorption properties were tested.
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