high gas seam

 
  • 高瓦斯煤層

high gas seam的用法和樣例:

例句

  1. For the method of drilling bits in high-gas coalbed,the influence of gas must be taken into account.
    對於含瓦斯煤層實施鑽屑法必須考慮瓦斯的影響。
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