directional well drilling
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- 定向井钻井
双语例句
- Turbodrills is very important downhole drilling tools in petroleum drilling engineering,especially in deep well and deflected well.
涡轮钻具是石油钻井工程中的一种重要井下动力钻具,在深井和定向井钻井中有着广泛的应用。
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