On the first filling of the hot water heating system or refilling after maintenance, air in the piping and radiation must be removed and the whole system filled with water.

在对热水加热系统进行首次进水或维护后在进水，管道和散热器内的空气必须被排除出来，整个系统必须用水充满。

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Set up the net hot air drying system, the drying sewage track of the workpiece.

设置净热风干燥系统，工件干燥无水迹。

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Cold air through the cooling system after exchange of hot air into a cooling fan unit discharges.

冷空气通过冷却系统交换后变成热空气被冷却风扇排出机组。

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The next decade will see the construction of a city-wide rail system and air-conditioned stadiums, so matches can be played during the scorching hot summer, as well as an entirely modular stadium in Doha Port that will be disassembled after the World Cup and sent on to the next host country.

BBC: Living in: Doha

It carried its own air-conditioning system, to prevent batteries from getting too cold or too hot.

NEWYORKER: Green Giant