英语词汇“metamorphic zone of coal”的翻译、意思、用法、释义-英汉汉英双解词典

词汇	metamorphic zone of coal
释义	metamorphic zone of coal 煤变质带；煤田、聚煤区内,变质程度不同的煤在空间上呈现的规律性分布。
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