ROCKWOOL Ѯ , . Ѯ , , - 3 . Ѯ . 135 /³ λ10 = 0.034 /() λ25 = 0.036 /() λ = 0.043 /() λ = 0.045 /() 10 % , 35 , 7.5 , 1.5 % , μ = 0.30 /() , 2.0