If you use firebricks round the walls of the boiler, the heat loss. Can be considerably reduced.

炉壁采用耐火砖可大大降低热耗。

youdao

If you use firebricks round the walls of the boiler, the heat loss, can be considerably reduced.

炉壁采用耐火砖可大大降低热耗。

youdao

It contributes to a loss of combustion and boiler efficiency.

它影响了燃烧损失和锅炉效率。

youdao