| 摘要 |
PROBLEM TO BE SOLVED: To obtain a glass having a high Young's modulus. SOLUTION: This glass composition has compositional ranges of principal components of >=35 and <=39.5 wt.% of SiO2, >=5 and <=l9.5 wt.% of Al2O3, >=10 and <=30 wt.% of MgO and >=5 and <=20 wt.% of TiO2 in the glass composition.
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