These larger ions take up more room and are pressed together when the glass cools, producing a layer of compressive stress on the surface of the glass.
这些钾离子占据更大的空间，当玻璃冷却下来的时候，钾离子便挤压在一起，从而在玻璃表面生产一层压应力层。
This kind of nanostructured surface layer with compressive stress could significantly increase the fatigue strength of butt welded joint.
这种压应力纳米强化层可以明显地提高对接接头的疲劳性能。
The existence of the compressive stress in the surface layer is the main reason for the strengthening of ceramics.
表层压应力的存在是瓷体增强的一个主要原因。
The results show that the stress in ceramic layer is mainly for lateral compressive one, and its maximal stress occurs in the place that is at the distance of 1/3 thickness from coating surface;
结果表明，陶瓷层内的残余应力主要表现为横向压缩应力，且最大值位于距陶瓷层表面1/3厚度处；
The results show that the stress in ceramic layer is mainly for lateral compressive one, and its maximal stress occurs in the place that is at the distance of 1/3 thickness from coating surface;
结果表明，陶瓷层内的残余应力主要表现为横向压缩应力，且最大值位于距陶瓷层表面1/3厚度处；
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