hard thick coal中文,hard thick coal的意思,hard thick coal翻译及用法

2026-04-13 09:01 浏览次数 16

hard thick coal

坚硬厚煤层

hard thick coal 例句

英汉例句

  • during caving the hard thick coal seam, the weakening treatment of top coal is a key problem influencing the comprehensive benefits of coal mine.

    通过对特厚坚硬煤层综放开采技术的系统分析,指出提高坚硬顶煤的冒放性和瓦斯的综合治理是该条件下综放开采所面临的主要技术难题。

  • intenerating technique of top coal in fully mechanized top coal caving hard thick coal seam;

    阐述了坚硬厚煤层综放开采关键设备的选型、设备间的工作关系等。

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