动词
中文翻译：石墨化
同义词：
['graphite', 'graphitize', 'graphitize to a high temperature']
例句：
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1. The graphite was used to make the pencils.
石墨被用来制作铅笔。
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2. The graphite is used in the production of graphite pencils.
石墨用于生产石墨铅笔。
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3. The graphite was heated to a high temperature to remove impurities.
将石墨加热至高温以去除杂质。