求翻译：机电设备安装。智能化楼宇系统工程，机电设备，电子工业产品，电子元件器件，工矿配件，冷冻设备，空气处理设备是什么意思？

Mechanical and electrical equipment installation. Intelligent building systems engineering, mechanical and electrical equipment, electronics and industrial products, electronic components and devices, industrial accessories, refrigeration equipment, air handling equipment

Mechanical and electrical equipment installation. Intelligent building systems engineering, mechanical and electrical equipment and electronics products, electronic components, devices, and industrial and mining accessories refrigeration equipment, air handling equipment

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Electrical and mechanical equipment installation. Intelligent building system engineering, electrical and mechanical equipment, electronic products, electronic components and devices, industrial accessories, refrigeration equipment, air treatment equipment

Electromechanical device installment.Intellectualized building systems engineering, electromechanical device, electronics industry product, electronic component component, industry and mining fitting, refrigeration plant, air handling equipment