| 摘要 |
The support is of the laminar type and has transversely various areas with different resistance, resilience and coefficient of friction, in order to determine, in the impact of a body on the support, a concave shape in the central part of the support, which is to brake the movement during impact by the body, over the upper or lower edges of the support, and which simultaneously has some heat-resistant friction characteristics, whilst retaining characteristics of sliding without adherence between 100° C. and 200° C.
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