抽采

  • 网络drainage; extraction

抽采抽采

抽采

drainage

抽采钻孔,drainage... ... ) Heavy-caliber gas pipeline drill hole 大口径瓦斯抽采钻孔 ) drainage 抽采 ) extraction 抽采 ...

extraction

抽采钻孔,drainage... ... ) drainage 抽采 ) extraction 抽采 ) gas extraction 瓦斯抽采 ...

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