VD and working procedure.Experiments showed that major of the LF step foreign inclusions are aluminium sesquioxide. spotted non-deforming inclusion and sulphuret.

VD及成材工序现场取样.系统各工序中夹杂物的行为.特征.数量.变化历程及影响因素.实验结果表.

High purity titanium sesquioxide was obtained by the reaction of high purity hydrogen and titanium dioxide in the presence of titanium tetrachloride.

用高纯氢和高纯氧化，在四氯化存在下，可以得到高纯三氧化。

The indium sesquioxide with over 99% purity can be prepared by a decomposition of nitric acid. The method was characterized by fewer equipments, simple operation, low cost and quick yield.

用硝酸解法可制取纯度高于99%的三氧化铟.本法具有设备少、操作简单、成本低、见效快等优点.