辊压预应变
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rolled prestrain
预应变滚
以上为机器翻译结果，长、整句建议使用 人工翻译 。
It is considered that special structure of the dislocation and damage accumulation induced by rolled were main factors to make the fatigue strength of the welded joint reduced after rolled prestrain.
分析认为，辊压后材料中位错的特殊结构和材料内部所形成的损伤累积是疲劳性能下降的主要原因。
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