The closed cell polyimide foams were fabricated by foaming the precursor balloons, and the foams' acousticabsorption 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。
2
These 'trees' provide seating, shade and acousticabsorption and at night they serve as an illuminate bodies which fill the room with white or blue glowing light.
这些“树”形的家具可以坐、可以遮阴、可以吸声，夜晚还可以做为发光体透出白色或者蓝色的光。
3
The noise-deadening property was also analyzed and pointed that it was a new composite material which has much high performance such as excellent noise-deadening and acousticabsorption etc.