名词
中文翻译：石墨球体
同义词：
['graphite sphere', 'graphite spheroid']
例句：
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1. Thegraphite spherule was used tomake the compass.
石墨球体被用来制作指南针。
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2. The graphite spherule is a common material in the productionof pencils.
石墨球体是制造铅笔的常见材料。
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3. The graphite spherule has a smooth surface and is easyto handle.
石墨球体表面光滑，易于操作。