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制造天然石墨离子电池的工艺；
The manufacturing process of natural graphite-ion battery;
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铸铁内的碳天然形式是游离石墨薄片形式。
The natural form of carbon in cast iron is the free graphite flake form.
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铸铁内的碳天然形式是游离石墨薄片形式。
The natural form of carbon in cast iron is the free graphite flake form.
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