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.
应用流式细胞术分析烟草细胞在交变应力作用下细胞周期的变化。
Flow cytometry was used to measure cell cycle parameters in tobacco cell suspensions acted by alternative stress.
在齿形链传动中，链条承受周期性的交变载荷，其中链节啮入轮齿时产生的冲击载荷影响较大。
In odontoid chain drive, the chain bears a periodical alternating load, in which the impact load produced while the link meshes into the tooth of sprocket makes comparatively big effect.
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