轴功率 brake power
效率 efficiency
指示效率 indicated efficiency
机械效率 mechanical efficiency
总效率 overall efficiency
制冷系数 coefficient of performance （COP）
制冷压缩机的制冷系数 refrigerating compressor coefficient of performance
热力完善度 thermodynamical perfectness
能效比 energy efficiency ratio （EER）
热泵供热系数 heat-pump coefficient of performance