You will need to drain the central heating system before you replace the radiator.
你得先把中央供暖系统的水排净再更换散热器。
Energy use refers to energy consumers - the central heating system, mainly referring to the building heating, generally pass through the radiator to heat the room.
热能使用是指热能的消费者——在集中供热系统中主要指建筑物的采暖，一般通过散热器把热能传给房间。
Energy use refers to energy consumers - the central heating system, mainly referring to the building heating, generally pass through the radiator to heat the room.
热能使用是指热能的消费者——在集中供热系统中主要指建筑物的采暖，一般通过散热器把热能传给房间。
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