“direct-expansion refrigeration”的概念、定义、翻译、参考文献-科学参考

单词	direct-expansion refrigeration
释义	direct-expansion refrigeration Encyclopedia 工学直接膨胀制冷释 direct-expansion refrigeration直接膨胀制冷不需要另设独立的制冷系统，原料气降温依靠串接在系统中的各种类型膨胀制冷设备来完成，制冷能力直接取决于气体的压力、组成、膨胀比及膨胀制冷设备的热力学效率的工艺方法。又称膨胀制冷法或自冷法。
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