• 一种全新南极的钻进重要作用

    Hot melting is a completely new method to fracture rocks and has played a very important role in drilling medium deep and deep holes in Antarctic area.

    youdao

  • 一种全新南极的钻进重要作用

    Hot melting is a completely new method to fracture rocks and has played a very important role in drilling medium deep and deep holes in Antarctic area.

    youdao

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