Drill string receives the complicated stress which is tension-compression stress, torsion stress, bending stress, etc.

在长期工作中，钻具承受拉伸、压缩、弯曲和扭转等复杂应力。

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Drill string receives the complicated stress which is tension-compression stress, torsion stress, bending stress, etc.

在长期工作中，钻具承受拉伸、压缩、弯曲和扭转等复杂应力。

youdao