我们知道,蛋壳的椭圆结构可以让它承受很大外力,原理就是把外界的作用力分解成两个侧向的压力,各部分之间受力越压越紧,使结构更稳固,我国古代的拱形桥也是这个原理.对于蛋壳的这个特点大家都比较熟悉了,但是对于它的另一个特点,大家或许还没有认识到,就是它的保鲜功能.德国科学家近日在纳米比亚的灌木林中发现了一个秘密,当地土著居民为了能够长时间的贮存饮水,竟用一种鸵鸟的蛋壳作为保鲜容器,科学家经过研究发 We know that the oval structure of the eggshell allows it to withstand large external forces. The principle is to break down the external force into two lateral pressures. The force between the various parts is pressed more tightly to make the structure more stable. The arch bridge is also this principle. We are all familiar with this feature of the eggshell, but for its other characteristics, we may not have realized that it is its preservation function. German scientists recently in the bush in Namibia A secret was discovered. In order to store drinking water for a long time, local indigenous people used an ostrich egg shell as a fresh container.