英语词汇“comparatively regular coal seam”的意思、用法、释义、翻译、读音、例句、短语、词组-英汉翻译词典

单词	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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