coal-bed

英 ['kəʊlb'ed] 美 ['kəʊlb'ed]

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- n. 煤层
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临近单词

coalite coal coal-cutting machine coal - mining wastes coal roadway tunneling coal bearing formation coal-seam uncovering coal chemical industry coal-bearing stratum coaltivie joint action Coal flotation reagent coal-tar hydrocarbon

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