A man went outside in the pouring rain with no protection, but not a hair on his head got wet. How come?
一个男人在倾盆大雨中外出，没有任何遮挡的工具，但他的头发一点都没湿，这是为什么？
3
The results show the relative importance of factors, from most significant to least significant: foam material, metallostatic head, the permeability of the coating, pouring temperature.