机译:SrO对Na& LT; 2& GT; o-cao-siO& /副SiO& 2& 2& 2& / sub; 2& / sub& / sub; 2& / sub& 2& / sub& / sub& / sub& / sub& / sub& / sub& / sub& / sub; / sub; / sub; -p& sub& 2& o& l; sub& / sub& 玻璃系统