indirect fired furnace

例句：

1. 1.The indirect fired furnace is a key component of the production process.
   间接加热炉是生产过程中的关键部件。
2. 2. The indirect fired furnace is used to produce high-quality steel.
   间接加热炉用于生产高质量的钢材。
3. 3.The indirect fired furnace is an important tool for metallurgical engineers.
   间接加热炉是冶金工程师的重要工具。