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  1. Oxford American Dictionary

    appraisal drilling

    • IPA[əˈprāzəl driliNG]
    • n.
      drilling undertaken to establish the quality, quantity, and other characteristics of oil or gas in a newly discovered field.

    • noun: appraisal drilling

    • 更多解釋

    appraisal drilling

    • n.
      drilling undertaken to establish the quality, quantity, and other characteristics of oil or gas ...

    Oxford Dictionary