• 产生热

producedadj.产生的动词produce的过去式和过去分词.producev.生产；引起；提出；制片；分娩n.产品；农产品produce a tapestry制造挂毯produce facilities生产装置Produced in yunnan滇产Produce manufacture生产性能produce effectively有效生成Produce performance生产性能produce improvement改善, 改进produce information输出信息produce a signature署名produce of ethylene乙烯生产

1. Why heat can be produced by friction is clear now.
   为什么摩擦能产生热现在清楚了。
2. At the same time, deep underground, the decay of radioactive elements produced heat at rates more than six times greater than they do today.
   同时，地底深处的放射性元素衰变，产生热的速率是今日的六倍以上。