大家还记得曾经流行过的扩张器吧!它是由好几根钢丝弹簧捆在一起制成的,是以两手使劲拽拉的一种健身用具。作这种健身用具的弹簧,任凭你两臂有多大拉力,也只能使它变形0.5%左右,只要你一松手,它便立即恢复原状。但是,如果一旦加大拉力,使它变形超过0.5％的话,它就会失去弹性,再也恢复不成原状了。然而。最近已引起人们关注的超弹性合 Everyone remembers the once popular dilator! It is made of several wire springs bundled together, is a fitness appliance pulled hard with both hands. As a spring of this fitness equipment, despite your arms how much tension, it can only make it deformed by about 0.5%, as long as you let go, it will immediately restore the status quo. However, if the force of deformation is increased by more than 0.5% once it is increased, it will lose its elasticity and will no longer be restored to its original shape. however. The hyperelasticity that has drawn much attention recently