thin coal seam

 
  • 薄煤层

thin coal seam的用法和样例:

例句

  1. Hereby the safety of the combined mining of thin seams under the close gob water was evaluated.
    根据分析的结果评价了临界距离老空水下薄煤层联合开采的安全性。

thin coal seam的相关资料:

临近单词

今日热词
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