制冷量与制冷系数变化趋势的交叉点处为压缩机发挥最佳制冷性能的控制点；
Refrigerator oil having viscosity corresponded to the cross point of refrigerating capacity curve and refrigerating coefficient curve was the optimum product to obtain optimal refrigeration effect.
制冷量与制冷系数变化趋势的交叉点处为压缩机发挥最佳制冷性能的控制点；
Refrigerator oil having viscosity corresponded to the cross point of refrigerating capacity curve and refrigerating coefficient curve was the optimum product to obtain optimal refrigeration effect.
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