fully mechanized top-coal caving face

　
英 美
  • 綜放工作面

fully mechanized top-coal caving face的用法和樣例：

例句

  1. At the same time, methane effusing from the coal seam being worked increases, and the emphases of methane control could be put on the methane effusing from coal seam being worked.
    而大采長(cháng)綜放工作面本煤層瓦斯涌出量增大，則需要增加通風(fēng)量或者采用新的通風(fēng)方式。

fully mechanized top-coal caving face的相關(guān)資料：

臨近單詞

今日熱詞
目錄 附錄 查詞歷史
国内精品美女A∨在线播放xuan