A new method in which trace arsenic in high-purity germanium dioxide is determined using silver nitrate absorption photometry is described in this discussion.
研究硝酸银吸光光度法测定高纯二氧化锗中痕量砷的新方法。
Among the developed countries, there were six main producers of germanium concentrate, and six main producers of germanium dioxide and high-purity germanium.
在发达国家中，从事锗精矿生产的主要公司有六家，生产高纯二氧化锗和高纯锗的公司有六家。
Among the developed countries, there were six main producers of germanium concentrate, and six main producers of germanium dioxide and high-purity germanium.
在发达国家中，从事锗精矿生产的主要公司有六家，生产高纯二氧化锗和高纯锗的公司有六家。
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