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Drilling
containing
hole coverage
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Chinese
bottom
hole coverage
钻头与井底接触面积
bottom
hole coverage
钻头齿
圈
对井底覆盖程度
bottom-
hole coverage
井底覆盖
bottom
hole coverage
rate
钻头齿
圈
对井底的覆盖率
hole coverage
钻头在井底覆盖面积
hole coverage
钻头齿与井底接触面积
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