中国人用黑色的石头来产生热量。
他还对人们用来燃烧产生热量的黑色石头感到困惑。
He was also puzzled by the black stones people used to burn to produce heat.
撞击多孔体产生的碎片较少,因此产生热量的能量更多。
Impacts on porous bodies generate less debris, so more energy goes into producing heat.
One is that he observed when people were machining cannon barrels, a lot of heat was generated, and there was a lot of work done.
第一种说法说焦耳发现,制作加农炮筒时,会产生大量的热,同时这中间有大量的做功。
It'll be hotter. How much hotter? Well, that depends on how much heat was produced.
它会更热一些,更热多少?,这取决于产生了多少热量。
And so maybe the work generated the heat.
因此或许功产生了热。
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