| 摘要 |
FIELD: chemistry. ^ SUBSTANCE: glass of composition, wt %: SiO2 46.0-50.0; K2O 4.0-8.0; Na2O 14.0-17.0; CaO 4.0-8.0; MgO 10.0-15.0; Al2O3 1.0-2.0; WO3 0.1-0.2; TiO2 1.0-2.0; PbO 6.0-8.0; Sb2O3 0.6-1.0; Pr2O3 0.8-1.2. Glass refraction index is 1.70-1.75. ^ EFFECT: increase of glass refraction index. ^ 1 tbl |
