| 摘要 |
An alkali-silicate glass composition with refractive index of 1.55 or greater, and Abbe number less than 52, suitable for the manufacture of crystal glass, comprises by weight SiO2 50-65%, M2O 12-23%, Bi2O3 1-20%, TiO2 1-15% and SrO 1-20% by weight (where M=Na, K or Li). |
