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螺丝都不会选,还能做设计?! |
点评
破坏力矩和拉力是2回事,按8.8级螺栓许用强度530MPa计算,大概能承受拉力600kg。可能是我记错了是M5的螺栓,或者他们用的是高强度的不锈钢,螺栓不止8.8
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