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Drill string resonance is the major cause of drill tool failure.
钻柱共振是引起深井钻具失效的主要原因。
youdao
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The failure of collar connection thread is one of the prime drill tool failures.
石油钻铤螺纹联接失效是钻具失效的主要类型。
youdao
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The failure of collar connection thread is one of the prime drill tool failures.
石油钻铤螺纹联接失效是钻具失效的主要类型。
youdao