| 摘要 |
FIELD: chemistry. ^ SUBSTANCE: glass of composition, wt %: SiO2 66.0-70.0; CaO 8.0-12.0; Na2O 8.0-12.0; K2O 3.0-5.0; CeO2 0.7-1.7; PbO 3.0-5.0; Cl' 0.1-0.2; Se 0.1-0.2. Glass refraction index is 1.70-1.72. ^ EFFECT: increase of glass refraction index. ^ 1 tbl |
