隔音材料不吸音
隔音材料對減弱透射聲能，阻擋聲音的傳播，就不能如同吸音材料那樣多孔、疏松、透氣，相反它的材質(zhì)應該是重而密實，如鋼板、鉛板、磚墻等一類材料。
Sound insulation materials to reduce transmission sound energy, stop the spread of voice, will not be able to as porous as sound-absorbing material, osteoporosis, breathable, instead it material should be heavy and thick, such as the type of materials such as steel, lead plate, brick wall.
隔音材料材質(zhì)的要求是密實無孔隙或縫隙；有較大的重量。由于這類隔音材料密實，難于吸收和透過聲能而反射能強，所以它的吸音性能差。
Sound insulation material requirement is close-grained without pore or aperture; Have larger weight. Because this kind of sound insulation material is close-grained, difficult to absorb and reflection through sound energy can be strong, so its sound-absorbing performance is poor.
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