你知道世界上的“弹跳冠军”吗?这个弹跳冠军不是别人,就是我们今天随处可见的橡胶。一个橡胶压力圈,无论你怎么用力挤压它,最后它总能回复原位,它的弹性如此之好,世界上再没有什么物质能与之媲美。橡胶可以拉伸到原来长度的七到八倍,拉力一消失,它又迅速恢复到原来的模样。橡胶不仅有优异的弹性,还具有绝缘性、不透 Do you know the “Bouncing Champion” in the world? This bouncing champion is none other than the rubber we see everywhere today. A rubber pressure ring, no matter how hard you squeeze it, and finally it can always return to its original position, its flexibility is so good, no matter in the world can match. The rubber can stretch seven to eight times its original length and as soon as the tension disappears, it quickly regains its original appearance. Rubber not only has excellent elasticity, but also has insulation, impermeable