这个过程需要一种特殊的金属，它能经受住巨大的温差——一边要接触高温气体而被加热，而另一边则必须保持低温。
The process requires special metals that can withstand a huge temperature differential - the side facing the hot gases stays warm, and the other side must stay cool.
我没想到温差会是这么的大，因此我将温度计上方的金属板交换了一下，重复了实验。
I did not expect such a large differential, so I switched the panels above the thermometers and repeated the test.
当两端之间有温差时，金属丝内即产生与温差成比例的电流。
When both junctions are at different temperatures, an electric current is produced proportional to the temperature difference.
当两端之间有温差时，金属丝内即产生与温差成比例的电流。
When both junctions are at different temperatures, an electric current is produced proportional to the temperature difference.
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