After comparison and analysis of various kinds refrigerating systems, the technical scheme of refrigerating system of refrigerated railway car with the 23 t axle-load are put forward.

本文在对各种制冷系统分析比较后，提出23吨轴重铁路冷藏车制冷系统的技术方案。

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In this paper, problems appearing in the test of refrigerating quantity of passenger car air conditioner sets are analysed, and measures for solving the problems are put forward.

对客车空调机组制冷量测试中出现的问题作了分析，提出了解决问题的办法。

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