The main source for structural nonlinearity is summarized, and a FE model for the primary mirror subassembly of a collimator is established on the basis of contact theory.

介绍了产生结构非线性的主要来源，并在接触理论的基础上对主反射镜组件进行了合理的有限元建模。

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The window of mobile phone is one of the most important subassembly. Its main function is protect the LCD and add surface decorate effect of the mobile phone.

手机视窗(又称面板保护显示屏)是手机的重要组件之一，主要作用是保护LCD显示屏和增加外观装饰效果。

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