英语词汇“grade of coal”的读音、翻译、释义、用法及例句-智慧网

词汇	grade of coal
释义	grade of coalgrade of coal1.■煤分级;煤级;煤炭分类;煤炭品质分类
随便看	underpurified under-purlin insulation under-purlin lining underquenching under question underquote underran underrange underrate underrated octane number underrating underreach under reach under-reaching pilot protection underreaching protection underreact underreaction underream underreamed underreamed foundation under-reamed pile underreamer under-reaming underreaming bit underrefining

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