如果曲线向上弯曲，那就糟糕了。因为更多的负载意味着每请求的成本更高。
If it curves up away from a straight line, that's bad, because more load means a greater cost per request.
薄带折叠在某些情况下，创造极端的带材的横向弯曲，也对关节施加的相应负载。
Thin belt may in some cases fold over, creating extreme lateral bends in the belt material and exerting the consequential loads also on the joint.
对多种碳素钢在拉伸压缩和旋转弯曲负载下的微小裂纹扩展速率进行了研究。
A study has been done over the small crack growth rate for kinds of carbon steels under push pull and rotating bending.
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