It is indicated that uranium was moved out in the relative reducing condition and enriched precipitation in the relative oxidizingcondition.
研究表明，铀在相对还原条件下迁移，而在相对氧化条件下沉淀富集。
2
The oxidizing process of cast iron was analysed. The using condition, existing problem and solving method of weight-increase method were discussed.
分析了铸铁氧化过程特点；讨论了应用增重法研究铸铁抗氧化性能的适应条件、存在问题及解决方法。
3
The technological process of recovering copper and bismuth in wet handling elution residue by adding pyrolusite as oxidizing agents under the condition of ordinary pressure, low temperature, acidity.