واحدة بيس glaas طحن machinineg
واحدة بيس Glaas طحن Machinineg Glass Wikipedia Glass is a noncrystalline amorphous solid that is often transparent and has widespread practical, technological, and decorative usage in, for example, window panes, tableware, and most familiar, and historically the oldest, types of glass are "silicate glasses" based on the chemical compound silica (silicon dioxide, or quartz), the
