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I-aluminium foam entsha, i-coefficient yokunciphisa ingxolo epheleleyo, ifikelela kwi-0.75, 250 ~ 1000Hz, i-medium frequency band sound absorption coefficient, ifikelela kwi-0.9, ingaphezulu kakhulu kune-rock wool, ibhodi ye-gypsum, ipleyiti yesinyithi eneembobo kunye ne-o...
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