在加热炉的底部，燃料油或天然气通过燃烧器燃烧。

Combustion of gas or oil fuel occurs in burners at the bottom of the heater.

youdao

在加热炉的底部，燃料油或天然气通过燃烧器燃烧。

Combustion of gas or oil fuel occurs in burners at the bottom of the heater.

youdao