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Air-conditioning is an important service system in modern buildings that provides comfortable indoor environmental conditions for occupants. It refers to the process of controlling temperature, humidity, air movement, and air purity within an enclosed space. In building construction and maintenance, air-conditioning systems are widely used in residential buildings, offices, hospitals, hotels, shopping complexes, and industrial establishments to maintain a pleasant indoor atmosphere. The main function _______ _______ _________ ___ ___ _____ ______ _______.
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