Acoustical material
申请(专利)号:
US6278136A
申请日期:
02/07/1936
公开/公告号:
US2114546
公开/公告日期:
04/19/1938
被引量:
摘要:
The present invention relates to an acoustical material and also to a method of its preparation. It is an object of the present invention to provide a porous material capable of absorbing and deadening sound waves. It is another object of the present invention to proyide a light weight acoustical...
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