Effect of Air Cooled Coil Fan Pre-Start on the Refrigeration System Dynamics During the Reverse-Cycle Defrost of an Air-Source Heat Pump Chiller是什么意思_Effect of Air Cooled Coil Fan Pre-Start on the Refrigeration System Dynamics During the Reverse-Cycle Defrost of an Air-Source Heat Pump Chiller在线翻译_英语_读音_用法_例句