low temperature air supply system
low temperature air supply system
低温送风系统
以上为机器翻译结果，长、整句建议使用 人工翻译 。
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It is noted that all these four schemes are economically feasible. The one based on a direct evaporation of refrigerant and low-temperature air supply system enjoys the best economy.
这四种方案在经济上是可行的，其中以冷媒直接蒸发，低温送风系统的经济性最佳。
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