After passing through the boiler, the gasses are still very hot.

气体通过锅炉后仍然很热。

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General to add water to go through three stages of heating boiler, i. e.

一般给锅炉加水要经过三个加热阶段，即：给水被加热成饱和水；

youdao

General to add water to go through three stages of heating boiler, i. e.

一般给锅炉加水要经过三个加热阶段，即：给水被加热成饱和水；

youdao