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phrases
bottom hole coverage
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forag.
钻头与井底接触面积
;
钻头齿
圈
对井底覆盖程度
pétr.
对井底覆盖程度
bottom-hole coverage
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forag.
井底覆盖
techn.
钻头与孔底接触面积
bottom- hole coverage
:
4 phrases
, 2 sujets
Forage
1
Pétrole / pétrole
3
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