The convector pits are covered with convrete grids that are prefabricated for building pigsties.
供
并被通常用在猪圈上的混
栅覆盖。
The convector pits are covered with convrete grids that are prefabricated for building pigsties.
供并被通常用在猪圈上的混栅覆盖。
When the temperature of the room reaches 20' C, the convector heater cuts out.
室内温度达到摄氏二十度时，空气对流加就会自动停止工作。
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