Collagen is by far the strongest and most abundant type of fiber. Tough and flexible, it's essentially a strand of protein, and stress tests show that it's actually stronger than a steel fiber of the same size.

胶原蛋白是迄今为止最强韧和最丰富的纤维类型。它坚韧而富有弹性，本质上是一种蛋白质链，压力测试表明它实际上比相同大小的钢纤维更强。