井眼中特别弯曲的地方，该处三维空间内井眼的轨迹变化很快。
A particularly crooked place in a wellbore where the trajectory of the wellbore in three-dimensional space changes rapidly.
井眼中特别弯曲的地方，该处三维空间内井眼的轨迹变化很快。
A particularly crooked place in a wellbore where the trajectory of the wellbore in three-dimensional space changes rapidly.
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