名词
中文翻译：中国煤炭分类同义词
同义词：
['Chinese Coal Classification System', 'Chinese Coal ClassificationStandard']
例句：
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1. The classificationof coal is crucial for the development ofthe industry.
煤炭的分类对于行业的发展至关重要。
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2.The classification of coal has a significant impacton energy efficiency.
煤炭的分类对能源效率有重大影响。
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3. The classification of coalis based on its physical and chemical properties.
煤炭的分类基于其物理和化学属性。