external-combustion cycle

例句：

1. 1. The engine's exhaust gases are released into the atmosphere during the external combustion cycle.
   在外部燃烧循环中，发动机的废气被释放到大气中。
2. 2.The research team has developed a new method to improve the efficiency of the external combustion cycle.
   研究团队开发了一种新方法，以提高外部燃烧循环的效率。
3. 3. The external combustion cycle is crucial for the operation of many industrial processes.
   外部燃烧循环对于许多工业过程的操作至关重要。