HK-40080404-B - A SOUND ABSORPTION DEVICE AND A NOISE REDUCTION EQUIPMENTHK40080404BHK 40080404 BHK40080404 BHK 40080404BHK-40080404-BInventors李晓东郑铭阳陈超Assignees北京航空航天大学DatesPublication Date20260508Application Date20230228