Absorption of nitrogen from the air and carbon from contaminating substance has been found on the surface of quartz glass, soda-lime glass and lead crystal glass samples.
在石英玻璃、钠钙玻璃和铅晶质玻璃的表面，发现吸附有来自空气中的氮以及有机沾污物的碳。
Some kassite is found in the red mud, and its crystal parameters are determined. The chemical cause for the reduction of caustic soda losses is also analysized.
在溶出赤泥中发现了羟基钛酸钙，并测出了它的晶体参数，同时还分析了碱耗降低的化学原因。
Some kassite is found in the red mud, and its crystal parameters are determined. The chemical cause for the reduction of caustic soda losses is also analysized.
在溶出赤泥中发现了羟基钛酸钙，并测出了它的晶体参数，同时还分析了碱耗降低的化学原因。
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