| 摘要 |
A biologically-degradable mineral fibre contains (wt.%): 40-52 silica, under 4 alumina, 25-45 calcium oxide, 5-15 magnesia, 0-7 barium oxide, 2-12 sodium oxide, 0-10 potassium oxide, where sodium and potassium oxides together 2-15, and 0-5 TiO2+Fe2O3+MnO. |
