反射镜的背面应经常与空气接触但无需通风。
The reverse side of the mirror should be in continuous contact with air without needing ventilation .
反射镜的背面应经常与空气接触但无需通风。
The reverse side of the mirror should be in continuous contact with air without needing ventilation.
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。
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.
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