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根据对Ｒ２２替代工质的研究结果，概述各种工质的性能及应用条件，建议国内制冷行业应积极开展替代品的研究与实验。
According to the research results of R22 alternative working fluid, the properties and application conditions of various working fluids are summarized. It is suggested that the domestic refrigeration industry should actively carry out research and experiments on alternatives.