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。
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.
文章讨论了航空波导结构密封失效的故障机理，表面活性、胶层弹性模量、热膨胀、以及因环境变化产生应力等引起密封失效的有关因素。
Study on failure mechanism shown: the main cause is the deformation stress due to environment changes that resulted high leakage failure ratio during environment conditional tests.
引入了半无限体的无穷边界条件，推导出半无限层表面的位移与应力关系式。
The relations between the displacements and the stresses on the surface of semi-infinite body are obtained by introducing the infinite boundary conditions.
结果表明，沥青层模量梯度对沥青路面结构表面剪应力有显著的影响。
The result indicates that there is a great influence of stiffness gradients of asphalt course on asphalt pavement structure shear stress.
该方法利用现有仪器，通过改变测定技术和计算方法，可以无损测定铍等轻金属制品表面残余应力及沿层深的分布。
This technique used in the present analyzer can non-destructively measure light metals' residual stresses with depth resolution, such as beryllium, by altering measuring and evaluating method.
构造了一个满足孔边应力边界条件、层间应力连续条件以及层合板表面应力边界条件的孔边应力单元。
A new stress element near a hole which satisfies both the stress boundary conditions at the hole and at the surface of the laminate and stress continuity condition at the interface is developed.
与干磨相比，湿磨硬化层表面残余压应力有所提高，但其硬化层深度减少了约30%。
Compared with the dry-grinding, the surface compress residual stresses of the hardened layer under wet-grinding is increased, but its depth of hardened layer reduces about 30%.
黄铜表面在氨水中腐蚀或应力腐蚀时形成脱锌层，由此产生一个附加拉应力。
Dezincification layer is formed on brass during corrosion or stress corrosion cracking (SCC) in ammonia solution, and an additive stress is induced in the same time.
针对表面残余应力的计算也证实了表面加工变质层的有效去除。
The demonstrated decrease of surface residual stresses testifies the removal of the former deformation layer.
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；
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;
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