4N高纯α相纳米氧化铝本身就是中文表述，其对应的标准翻译为：**4N高纯α相纳米氧化铝**（如果是英文转译的话，原英文如果是"4N high-purity α-phase nano alumina"，翻译为中文就是上述内容）。 不过按照要求直接输出翻译结果： 4N高纯α相纳米氧化铝

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