Even buildings made of steel and glass usually have a cornerstone, often engraved with the date construction began. 建筑物一般都有奠基石，就连钢和玻璃结构的建筑物也有，上面通常刻有开工日期。
The spectra and the fluorescence lifetime of glass containing acridine red were measured.Dependence between Luminescence characteristics and glass structure were analized. 测定了含吖啶红的玻璃复合材料的光谱及荧光寿命，分析了发光特性与玻璃结构间的关系。
