名词
中文翻译：无烟煤
同义词：
['anthracite', 'bituminous coal']
例句：
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1.The para-anthracite is a high-quality raw material for the manufacturing of electrical equipment.
无烟煤是制造电气设备优质原料。
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2. The bituminous coal is used to produce oil and gas.
烟煤用于生产石油和天然气。
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3.The anthracite is known for its low sulfur content.
无烟煤以其低硫含量而闻名。