We need a few pieces of expansion valve for refrigeration plant.
我们需要几个用于制冷装置得膨胀阀。
Modification of refrigeration section in Xinjiang Chemical Fertilizer Plant
新疆化肥厂冷冻工段改造
Analysis on the causes of ice plug phenomenon in marine freon refrigeration plant
船舶氟利昂制冷装置冰塞故障解析
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