所述的弹性支承可为螺旋弹簧、 板弹簧或弹性垫层；

The elastic support can be a spiral spring, a plate spring or an elastic cushion;

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其次，从弹性垫层材料的力学特性角度出发，建立组合圆筒裱糊装配结构的力学模型。

Secondly, the structure's mechanical model that based on the elastic material mechanical characteristic and a certain enclasped state and enclasped thinking of multi-layers' shell is established.

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对城市铁路轨道道碴垫层研制从高分子弹性材料选择、模具设计加工及生产工艺三方面进行了分析与评价。

The selection of macromolecular elastic material, model design and production, and the producing technics of ballast padding plate for urban rail are analyzed and evaluated.

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