皱纹的力量

by My Father on 5月 19, 2007

每次发现一张纸浸入水后,风干的皱纹都很难恢复原样.假若在浸水前将纸夹在硬物中间,那纸风干后的形变能带来多大能量??
是否能有累似此类的材料呢???

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