氧化铅-氧化钾硅玻璃成分
面议
- 北京恒元启天化工技术研究院
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Al2O3 ........................... 0.05 %Fe2O3 (total Fe 0.010 %PbO............................... 30.59 %As2O3 (total As
Al2O3 ........................... 0.05 %Fe2O3 (total Fe 0.010 %PbO............................... 30.59 %As2O3 (total As