名词中文翻译
中文翻译：烟煤
同义词：
['bituminous coal', 'anthracite coal']
例句：
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1. Thecompany's main source of revenue comesfrom the extraction of per-bituminous coal.
该公司的主要收入来源是开采无烟煤。
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2. The coal mine islocated in a region with abundant per-bituminous coal resources.
煤矿位于一个拥有丰富无烟煤资源的地区。
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3.The use of advanced technology has greatly improvedthe quality and efficiency of per-bituminous coal mining.
先进科技的应用大大提高了无烟煤开采的质量和效率。