THE MASS TRANSFER OF DOWN-FILM ABSORBER IN THE NH_3 ABSORPTION REFRIGERATION MACHINE AND THE ENHANCEMENT OF HEAT TRANSFER IN THE ABSORBER是什么意思_THE MASS TRANSFER OF DOWN-FILM ABSORBER IN THE NH_3 ABSORPTION REFRIGERATION MACHINE AND THE ENHANCEMENT OF HEAT TRANSFER IN THE ABSORBER在线翻译_英语_读音_用法_例句