名词
中文翻译：次要石墨
同义词：
['secondary carbon', 'secondary graphite']
例句：
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1.The new alloy has a higher melting point and better wear resistance than the traditional material.
这种新型合金的熔点更高，耐磨性更好。
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2. The graphite is used in the production of electrical machines due to its high thermal conductivity.
由于其高热导率，石墨被用于生产电气机器。
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3. The graphite is often mixed with other materials to improve its mechanical properties.
石墨常与其他材料混合以改善其机械性能。