Report - 7 $ 4 4)(# .- 7 +* , 3ftp.pirika.com/JP/ChemInfo/PDF/Glass.pdf0.7 0.9 3.67 3.5 10.1 0.0 4.3-5.70 0.4 1.4 SiO2 B2O3 Al2O3 CaO BaO PbO Na2O K2O Sb2O MgO CaF2 Fe2O3 ZnO As2O3-1.9 1.74

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