名词中文翻译1
中文翻译：Unknown
同义词：
['subordinate coal', 'subordinate shale', 'paralitic coal']
例句：
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1.The paralic coal deposits are located in the northern part of the country.
副页岩煤层位于该国北部。
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2.The paralic coal is used for electricity generation.
副页岩用于发电。
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3. The paralic coal has a high carbon content, which makes it difficult to burn.
副页岩含碳量高，燃烧困难。