Presents the design principle of the HVAC system and the design of cold and heat sources, air system, water system and smoke control and extraction systems.是什么意思_Presents the design principle of the HVAC system and the design of cold and heat sources, air system, water system and smoke control and extraction systems.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句