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

VD成材工序现场取样.系统分析了各工序中夹杂物的行为.特征.数量.变历程因素.实验结果表.

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

用高纯氢和高纯钛，在四氯钛存在下，可以得到高纯三钛。

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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.

采用硝酸分解法可制取纯度高于99%的三铟.本法具有设备少、操作简单、成本低、见效快等优点.

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