手拿刚从开水里取出的熟鸡蛋,为什么不觉得烫手?这是因为刚从开水里拿出来的鸡蛋表面还沾着水,水分蒸发使蛋壳温度降低,因此手并不感到很烫。不过,这只是很短的瞬间,鸡蛋表面的水分完全蒸发以后,鸡蛋就会烫手了。蒸发是降低温度的好办法。当室温比人体的温度高时,人体向外散热主要依靠蒸发。所以一个人即使在面包炉里,只要不被直接烫伤也能待上 Why do not you feel hot when you take the cooked egg that you just took out of the boiling water? This is because the surface of the egg that has just been taken out of the boiling water is also covered with water. The water evaporates to lower the temperature of the shell, so the hands do not feel hot. However, this is only a very short moment, the egg surface will be completely evaporated after the water, the egg will be hot. Evaporation is a good way to reduce the temperature. When the room temperature is higher than the temperature of the human body, the body mainly depends on the evaporation of heat. So, even in a bread oven, one can stay as long as it is not directly scalded