进一步增加调制周期，两调制层之间产生非共格界面，破坏了薄膜中的交变应力场，薄膜的硬度和弹性模量也随之降低。
Further increasing modulation period leads to the emerge of incoherent interface and the destroy of alternating stress field, accompanied by the decreased mechanical properties.
本文基于小孔释放法测量残余应力的方法，通过实验研究了交变载荷对焊接残余应力场产生的影响。
Based on the blind-hole method, series of experiments are carried out to analyze the effect of alternate loading to the redistribution of residual stress.
本文基于小孔释放法测量残余应力的方法，通过实验研究了交变载荷对焊接残余应力场产生的影响。
Based on the blind-hole method, series of experiments are carried out to analyze the effect of alternate loading to the redistribution of residual stress.
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