基本解释[经济学]换气扇英汉例句双语例句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。词组短语短语air r exchange fan 换气扇专业释义经济学换气扇