An acoustically absorbent material (e. g. a fabric) may be secured to an inwardly facing surface of any part formed from perforated sheet metal.
吸音材料(例如织物)可固定至由穿孔金属板形成的任何部分的面向内的表面。
An acoustically absorbent material (e. g. a fabric) may be secured to an inwardly facing surface of any part formed from perforated sheet metal.
吸音材料(例如织物)可固定至由穿孔金属板形成的任何部分的面向内的表面。
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