Further increasing modulation period leads to the emerge of incoherent interface and the destroy of alternating stress field, accompanied by the decreased mechanical properties.

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。

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Further increasing modulation period leads to the emerge of incoherent interface and the destroy of alternating stress field, accompanied by the decreased mechanical properties.

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。

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