弹簧：一种有弹性的机器组件，能在承载时变形到预期的状态，卸载后又恢复到原状。

Spring: Elastic machine component able to deflect under load in a prescribed manner and to recover its initial shape when unloaded.

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皮辊的橡胶弹性可以阐述为“橡胶在无永久变形的前提下重新恢复或获得初始的几何形状的能力”。

Re-silence property of a rubber cot can be explained in terms of "ability of a rubber cot to recover or regain its original geometry without any permanent deformation".

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弹性变形是材料变形部分在去除载荷后可以恢复到原来的形状。

Elastic deformation is that part of the deformed material which when the applied load is removed would spring back to its normal shape.

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