英语词汇“comparatively regular coal seam”的翻译、意思、用法、释义-英汉汉英双解词典

词汇	comparatively regular coal seam
释义	comparatively regular coal seam 较稳定煤层；煤层厚度有一定变化；但规律性较明显；结构简单至复杂；全区可采或大部分可采,可采范围内厚度变化不大的煤层。
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