名词
中文翻译：主要石墨
同义词：
['primary carbon', 'primary carbon material', 'primary carbon black']
例句：
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1. This graphite is used in the production of pencils and pens.
这种石墨用于制造铅笔和钢笔。
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2.The graphite was extracted from a nearby mine.
石墨是从附近的矿中提取的。
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3. The graphite is highly conductive, making it ideal for electronic applications.
石墨具有很高的导电性，因此非常适合电子应用。