heat conduction problem

例句：

1. 1. The heat conduction problem inthe engine is a major concern for engineers.
   发动机中的热传导问题是工程师们的主要关注点。
2. 2. The research on thermal conduction problems has been ongoing for decades.
   关于热传导问题的研究和探讨已经持续了几十年。
3. 3. The solution to this thermal conductionproblem requires a deep understanding of the materialsinvolved.
   解决这个问题需要对涉及的材料有深入的理解。