It has been demonstrated that nitrogen release in pulse heat is quantitative.

证明脉冲加热法氮释放完全。

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Among them: flowerpots whose color warns when the soil is drying out, blackboards using water instead of chalk that could be erased by a pulse of heat, and even cars that change color in the rain.

其中包括：当土壤正在变干之时，凭颜色发出警告的花盆；用水笔代替粉笔写字，用热脉冲可以擦除字迹的黑板；甚至包括在雨中变化颜色的汽车。

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Imagine a metal that "remembers" its original, cold-forged shape, and can return to that shape when exposed to heat or a magnetic pulse.

想象一种金属，它可以“记忆”其初始、冷锻造的形状，当受热或磁脉冲时会回复到该形状。

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In the evening, the skies pulse with lightning, but there is nothing yet to relieve the heat.

BBC: Before the storm in Cameroon

Forecasters say people should limit outdoor activity during the hottest portions of the day, wear lightweight clothing, drink plenty of water and be watchful for signs of heat exhaustion, which include heavy sweating, pale and clammy skin, weak pulse, fainting and vomiting.

CNN: Heat advisories issued to states dwindles to 15