For maximum softness and ductility the cooling rate should be very slow, such as allowing the parts to cool down with the furnace.

为了得到最大柔软性和延展性冷却速率应该很慢，比如让零件与炉子一起冷下来。

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And if you have time, cool down between events until your heart rate is below 100.

如果你有足够的时间，在两次比赛之间做好整理运动，一直到你的心跳速率降到100以下。

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Heart rate taken at the end of exercise after cool-down and stretch.

锻炼结束应放松下来并进行伸展运动，这时再测量一下自己的心率。

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The second, following a slight cool-down, began in 1975 and rose at quite a constant rate until 1998, a strong Pacific Ocean El Nino year.

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