人的生命活力需要保持恒定的体温,新陈代谢产生的热量也会通过人的体表散发出去。由于棉衣里填充着蓬松的棉花纤维,纤维之间有无数个小空隙,空隙中又充满了空气,空气和棉花纤维都很不容易传热。如果人体包裹着厚厚的棉衣,一方面可以阻止人体热量散发,另一方面又可挡住外面寒冷? Human vitality needs to maintain a constant body temperature, and the heat generated by metabolism will be emitted through the body surface. Because the cotton padded with fluffy cotton fibers, there are numerous small gaps between the fibers, the gap is filled with air, air and cotton fibers are not easy to heat transfer. If the human body is wrapped with a thick cotton coat, on the one hand, it can prevent the human body from emitting heat, and on the other hand, it can block the outside cold?