external superheater

例句：

1. 1.The external superheater is responsible for removing excess heat from the exhaust gases.
   外部过热器负责从废气中去除多余的热量。
2. 2. In this case, the external superheater was designed to improve efficiency.
   在这种情况下，外部过热器被设计来提高效率。
3. 3. The engineers carefully inspected the external superheater before installing it.
   工程师们在安装之前仔细检查了外部过热器。