求翻译：维持系统最小传热温差，二级蒸发器排出液浓度不变，系统总蒸发量不变，压缩机1的能耗保持稳定，随着一级排出液浓度增加，溶液沸点升增加，有效传热温差降低，蒸发器Ⅰ换热面积增加；同时，蒸发器Ⅱ承担的蒸发量减少，压缩机2进气量减少，能耗降低，蒸发器Ⅱ换热面积降低。当一级排出液浓度增大至不足于维持最小传热温差时，则所需换热面积迅速增加；一级排出液浓度增加，蒸发器Ⅱ的蒸发量降低，最小传热温差不变，换热面积缓慢降低。是什么意思？

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The maintenance system minimum heat transfer temperature difference, two level of evaporator down-flow density is invariable, the system total transpiration rate is invariable, the compressor 1 energy consumption maintenance is stable, increases along with the level down-flow density, the solution b

Maintained system minimum heat transfer temperature, II level evaporator discharge liquid concentration not variable, System total evaporation not variable, compressor 1 of energy keep stable, with level discharge liquid concentration increased, solution boiling point rose increased, effective heat

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