The related theory that the drilling tool is affected by the inclination of the well had proved the fact: if the Angle of the well is greater than a threshold, there will be se.

井斜对钻具的影响有关理论已经证明，如果井斜角大于某一临界值，在狗腿处旋转钻杆将会引起严重的疲劳破坏。

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The angle is one of an important feature of corner that is often used as a threshold to decide whether the corner can be utilized.

角点的角度是衡量角点特征的一个极为重要的指标，常作为阈值决定角点的取舍。

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Under this premise, the algorithm of data simplification is offered which combines the method of distance threshold with the one of vector angle.

以此为前提，提出了距离阈值法和向量角度法相结合的数据精简算法。

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