coal pillar mining中文，coal pillar mining的意思，coal pillar mining翻译及用法

2026-06-20 20:49 浏览次数 21

coal pillar mining

带煤柱开采

coal pillar mining 例句

英汉例句

  • the feasibility of the protective coal pillar mining in the artificial inclined steep drift in the thick (ultra thick) coal seam of a large slope is discussed.

    论证了急倾斜厚（特厚）煤层伪斜上山保护煤柱回收的可行性。

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