Heating is by compulsory circulating ventilation, temperature raising is fast and spread even.

加热采强制循环送风方式，温度上升快速，分布均匀。

youdao

Heating is by compulsory circulating ventilation, temperature raising is fast and spread even.

加热采强制循环送风方式，温度上升快速，分布均匀。

youdao