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The result shows: the local residual tensile stress and cyclic compressive loading thrust fatigue crack initiation and propagation in the size of compressive plastic zone.
结果表明，疲劳裂纹是在残余拉应力和循环压应力作用下萌生和扩展的，压塑性变形是裂纹萌生和扩展的必要条件。
The initiation of Wuhan Maple Leaf Education Park is a new important action of Wuhan Donghu Development Zone in importing superior education resources to support China optics valley construction.
武汉枫叶教育园区的奠基是武汉东湖新技术开发区引进优质教育资源服务中国光谷建设的又一重要举措。
The plastic zone by the hole edge and its effect on the initiation and propagation of the small crack also were investigated.
对于这类小裂纹扩展机制的分析目前还比较少。
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