作者: Wolfgang Schwab , Wolfgang Dr Holstein , Peter Lohe
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摘要: A biologically degradable mineral-fiber composition characterized by the following constituents in percent weight: SiO2 50 to 65, Al2O3 less than 2, CaO 16 30, MgO 4 15, Na2O 8 20, K2O 0 B2O3 10, TiO2, Fe2O3, Cr2O3, BaO, MnO, P2O5 5.