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为什么冬天玩雪手会变暖
更新时间: 2020-09-19 00:00:00  

这是因为雪冰冷的刺激带动了血液循环的结果,手接触到冰冷的雪后,皮肤受到刺激,信号由神经传到大脑司令部,大脑便迅速地调兵遣将,派血管里的血液马上向手部的毛细血管流去,血液的流动带来了热量,所以手会变暖。

关键词: 为什么 冬天

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